Real feedback

Data Heroes speak up

Hundreds of 5-star reviews from students across Diogo's courses on Udemy — a small selection below.

"Instructor Diogo was able to break it down in a way that a beginner can understand, despite time series forecasting is a normally challenging ML concept. He has good communication skills and always made sure to go as far as explaining each parameter. His Discord server is also really useful as you can clarify any doubts you have on time series forecasting, and he has helped me a ton. Would really recommend you to grab this course as it is still, considering that Diogo also looks out to update it with new sections for recent techniques in TS forecasting."
Luqman Rumaiz
Master Time Series Analysis and Forecasting with Python 2026
"This is the second Diogo’s course that I’ve done and, again, he managed to impress me with the quality of the content. Course covers a lot of exciting data mining techniques with an interesting examples. Explanations are detailed, but Diogo makes it easy to follow. Additionally, he provides cool challenges and a lot of material to further investigate the topics. Highly recommended!"
Monika Prpic
Data Mining for Business Analytics & Data Analysis in Python
"I just started this course but based on my past experience with Diogo's courses, I can say he is a fantastic instructor who really cares about making sure his students get the most out of the course. He's always quick to respond and help clarify anything that's unclear. He's knowledgeable, engaging, and makes the content easy to understand. I'm confident that this course will be no different and I'm excited to see what I'll learn!"
Eduards
Data Mining for Business Analytics & Data Analysis in Python
"Instructor Diogo was able to break it down in a way that a beginner can understand, despite time series forecasting is a normally challenging ML concept. He has good communication skills and always made sure to go as far as explaining each parameter. His Discord server is also really useful as you can clarify any doubts you have on time series forecasting, and he has helped me a ton. Would really recommend you to grab this course as it is still, considering that Diogo also looks out to update it with new sections for recent techniques in TS forecasting."
Luqman Rumaiz
Master Time Series Analysis and Forecasting with Python 2026
"This is the second Diogo’s course that I’ve done and, again, he managed to impress me with the quality of the content. Course covers a lot of exciting data mining techniques with an interesting examples. Explanations are detailed, but Diogo makes it easy to follow. Additionally, he provides cool challenges and a lot of material to further investigate the topics. Highly recommended!"
Monika Prpic
Data Mining for Business Analytics & Data Analysis in Python
"I just started this course but based on my past experience with Diogo's courses, I can say he is a fantastic instructor who really cares about making sure his students get the most out of the course. He's always quick to respond and help clarify anything that's unclear. He's knowledgeable, engaging, and makes the content easy to understand. I'm confident that this course will be no different and I'm excited to see what I'll learn!"
Eduards
Data Mining for Business Analytics & Data Analysis in Python
"I really enjoyed this course and would highly recommend it! It taught me a lot of techniques that will definitely enhance my everyday work. Course is very well structured with a lot of real life case studies and practical part covered in both Python and R. Also, Diogo is an amazing teacher. His explanations are very clear and straight to the point, which makes it easy to follow even if you’re an absolute beginner. He provides enough theory to really understand each concept without overcomplicating it with unnecessary details. Great job!"
Monika Prpic
Econometrics and Statistics for Business in R & Python
"Diogo is a great teacher. Plain and simple. This is my second course with him and I can now say that I'm a big fan of his style. He is easy to follow and explains things in a very down to earth kind of way. I was intrigued by the potential findings that we could conclude on this subject and that's what was my main driver throughout the course. Keep up the good work!"
Filip Crncec
Master Python for Data Analysis and Business Analytics 2026
"It was really fun this far. The examples and explanations are easy to understand. I think this gives me a good foundation to dig deeper on my own after I have finished the course. But for now, I do feel like I have the first tools I need to play around in some datasets on my own and apply what I learnt."
Lance Frobel
Business Data Analytics & Intelligence with Python
"Diego always has great courses that explain complex concepts and systems. This class is no exception, and his use of animations kept me engaged the entire course. He uses relevant examples, and provides details which drive home his points. If you work with data regularly or are brand new to data, I'm sure you can get some use from the course."
Matthew Luckey
Data Literacy and Business Analytics for Business Leaders
"Exceptional course explaining the basics through detailed understanding of how to use in daily business life and decision making. Any decision can be made, but the confidence in making the best choice involves analytics and the ability to convey data to others your target audience. Excellent material that is usable immediately. This is how we gain the confidence in our decisions and grow our organization."
Anonymized User
Data Literacy and Business Analytics for Business Leaders
"This course was actually quite informative, and I loved how it delved into the fundamentals of data literacy. I would recommend it to anyone starting out in the field of data analytics. It provides a solid foundation to better understand the field and helps you decide if you are truly keen on pursuing it further. It also serves as a great starting point for more in-depth courses."
Christine Putsoane
Data Literacy and Business Analytics for Business Leaders
"The course is well-structured and delivers on its goal of helping non-technical professionals become more confident in data-driven thinking. The explanations are clear, the business examples are relatable, and the hands-on exercises make the learning experience more engaging. I appreciated the use of visual infographics and simple worksheets to reinforce the core concepts. The final project is a great way to bring everything together and apply what was learned in a realistic scenario."
Jorge David Gonzalez Sotres
Data Literacy and Business Analytics for Business Leaders
"I ran through the attack and intro of all sections. I can say all concepts are well taught and tell when and why it is used . The programming parts are well structured and easy to follow, it is the instructor's way. Can be seen in his YouTube channel as well. The instructor breaks complicated topics into pieces, which make it possible to build complex models for tasks in work. Another great course (Y)"
Moaz alhomsi
Data Mining for Business Analytics & Data Analysis in Python
"This is excellent course, well organized and delivered. Complex topics are broken down and clearly explained. Not only the course guided me through the data mining models, but it also helped me to get a clear understanding of the potential use cases, pros and cons of each model and underlaying statistical concepts. Thank you very much!"
Dmitry Tlusten
Data Mining for Business Analytics & Data Analysis in Python
"The course is very well organized, easy to understand and there are many useful resources for the course or for further study. However, I would have liked to have seen a more in-depth "final" application case, especially in terms of interpretations and subsequent choices made in relation to the basic objective. Overall: I highly recommend this very interesting and well-designed course to anyone who wants to know how to gain new and valuable business insights."
Paul Maitre
Data Mining for Business Analytics & Data Analysis in Python
"Diogo is a very good teacher. I find the overall content of this course very relevant to my day-to-day work. I also highly recommend his other course Business Data analytics, which goes deep into other tools like time-series and RFM."
Nam Dao
Data Mining for Business Analytics & Data Analysis in Python
"I rarely write reviews but Diogo is a really good and kind instructor who teaches the course in bite sized chunks instead of overwhelming you all at once. Definitely enjoyed the course as well as the code snippets and templates to modify for my own projects at work and personal. I've never been a good live coder, even with years of experience, so templates like the ones provided really do help out."
Kevin Ayala
Econometrics and Statistics for Business in R & Python
"This course is amazing! I highly recommend it to everyone who is interested in time series analysis. It is easy to follow and i would say even quite entertaining! Moreover, you can easily adapt codes to your own data set. Diogo is very helpfull and quick to respond. And what i really liked that Diago not only shows the codes, but also explains each line, plus refreshes your knowledge of econometrics! Looking forwards to other Diogo's courses! Many thanks for this one!"
Julia F
Forecasting Models & Time Series Analysis for Business in R
"Diogo is an excellent instructor. He provides great examples and explains everything in detail, in a way that is so easy to understand. I recommend this course to anyone who has some Statistics knowledge and wish to depend the knowledge in R and Python."
Marina Iantorno
Master Python for Data Analysis and Business Analytics 2026
"I am very grateful for this course. It's one of the most practical trainings I did on udemy. I was looking for a complex training on Forecasting and this course includes many methods that are easy to apply and adjust for a user needs. To be honest I don't know how would I cope with new responsibility I got at my work if this course didn't exist. Thank you very much. I will for sure check out your other courses and recommend it to anyone who is intrested in forecasting!"
Pawel Widawski
Master Time Series Analysis and Forecasting with Python 2026
"This is one of the best courses on learning various forecasting models in python Diogo (instructor) is extremely clear in the course content, the templates provided as spot on and most importantly, Diogo is always quick to answer any questions coming from the trainees. Thanks so much for this knowledge, kudos to Diogo and the team!"
Anonymized User
Master Time Series Analysis and Forecasting with Python 2026
"This was a very interesting course, full of super useful concepts and from the programing perspective for those who do not know how to use Python, easy to follow and understand. Thanks for all the effort you put on creating it Diogo! 100% recommended!"
Guilherme Foppa Prestes
Master Time Series Analysis and Forecasting with Python 2026
"Very clear and up-to-date. The instructor does a great job explaining the concepts, and the course is packed with practical examples and real-world case studies. Highly recommended for anyone looking to apply what they learn right away."
Anonymized User
Master Time Series Analysis and Forecasting with Python 2026
"Diogo is an excellent instructor. Found his courses completely by luck while searching on specific subjects on udemy. This was my first course to buy, and after that I continued with even more. He explains everything to the last detail (reason for the courses are long) and also his way of interacting with the students and answering questions is very positive. I think of him very highly and also he is veeery knowledgeable in his subjects!"
Dionysios Papadatos
Master Time Series Analysis and Forecasting with Python 2026
"Diogo allows for multiple ways to look at the same problem. He teaches by first explaining the concepts, and then diving into examples. What is taught will help you build your own AI Agents. It is worth the effort to take his course, and follow along. Walking away from the course, I feel like I have a better understanding of how to actually work with AI in my day to day roles."
Matthew Luckey
RAG, AI Agents and Generative AI with Python and OpenAI 2026
"Very clear and practical course. Was easy to follow and helped me to speed up the application of XGBoost in my own job. Congrats to the instructor."
Matias Cerveira Lueska
10 Days: Prompt Engineering, Generative AI and Data Science
"Task of Course very clear. I'm exciting to go further. Now I'm in the middle and It is a porfessional application enables us understanding really the logic to be used in a professional way. The no-code enables to focus on understanding how to handle with Agents. I'm excited to go on further."
David METIN
AI Agents For All! Build No-Code AI Agents & Master AI 2026
"Thank you for your great course. Good content and well-planned presentation. I really enjoyed this course, useful information, learned a lot, easy to follow up and crystal clear delivery. Extremely valuable and superb training. Thanks to Instructor."
Sathish Kumar M
AI Agents For All! Build No-Code AI Agents & Master AI 2026
"It provides valuable basic knowledge about what is GenAI, how it works, what are its limitations, advantages, and what precautions to be taken into consideration when data security is important. It uses nice, easy to understand images and easier language"
Budhbhatti Kulin Sureshchandra
AI at Work: What Every Employee Needs to Know About AI
"This course was very practical, easy to understand step by step explanations. The instructor wasn't afraid of errors in the process, as they were taken as learning opportunities. I really enjoy learning, and am sure it will help me apply AI Agents in my own field of work."
Harley Hochstetler
Build AI Agents with Flowise AI. Easy and No-Code AI
"This was an excellent course. It built nicely on the basic knowledge I had learned. Diogo presented the content clearly at a good pace. There were plenty of challenges to test the skills learned. I tried all the challenges but mostly had to listen to the solution to complete them. I think this course has given me enough skills to try finding datasets and apply what I learned from this course to them."
Andrew Hubbard
Business Data Analytics & Intelligence with Python
"Probably the best python statistical course I've ever taken. Each learning unit built a python model that you can use in your job as a data analyst. The challenges were rigorous but they were relevant and applicable to the business use case that you get on the job. And the best part about the course was that the instructor was always there to help you code - by patiently going over and explaining the code - line by line. I highly recommend the course."
Mariano Viola
Business Data Analytics & Intelligence with Python
"Like the way examples and challenges are given at the end of each video, helps in understanding the concepts in a more practical way."
Nimisha Jose
Business Data Analytics & Intelligence with Python
"This is excellent course helping to build a good foundation understanding data, communicating and storytelling with data! There are options to practice and implement the concepts analyzing real life analytical challenges. Thank you very much!"
Dmitry Tlusten
Data Literacy and Business Analytics for Business Leaders
"This is clearly your best course. At a high level, with material not so easy to find elsewhere. Great! Hopefully the author can follow with more advanced courses, such as replicating actual advanced econometrics techniques directly from recent papers, that can be used by data scientists today, instead of the vanilla techniques. Would look up to it!"
Carlos Andrés Campo González
Data Mining for Business Analytics & Data Analysis in Python
"Diogo did a great job explaining the concepts in a clear and easy-to-follow way. The examples made everything click, and the pace was just right. Really solid session!"
Frank P
Data Mining for Business Analytics & Data Analysis in Python
"The teacher is very motivating and makes a point to explain all of the steps clearly and thoroughly. As someone who has a little bit of coding experience but is not fully confident in navigating complex codes on my own I feel like this instructor is the perfect fit for me."
Anonymized User
Data Mining for Business Analytics & Data Analysis in Python
"The course is really addressing real-world problems with current analytical tools which makes it easy to follow and to understand. Very good methodology !"
Camer AI
Econometrics and Statistics for Business in R & Python
"This course is simply the best econometrics course out there. Diogo knows what he is doing, real life case studies, no nonsense theories and complications. I highly recommend this course. But including some math could've been great, maybe adding some formulas as papers in the next update will be GREAT. Thank you Diogo for the amazing course, waiting for more !"
Moaz alhomsi
Econometrics and Statistics for Business in R & Python
"Great course. The contents are just as I expected. The teacher is very attentive, respectful and knowledgeable about what he's teaching. I highly recommend it for those interested in causal analysis and Propensity Score Matching/Analysis in general and wants hands-on learning with R and/or Python (you don't need to know econometrics)."
Ariel Menezes de Almeida Júnior
Econometrics and Statistics for Business in R & Python
"Boss explaining the main concepts for each analysis. Super useful for marketing and finance approach and most of all Diogo is really active on Discord and is willing to help and provide feedback on any doubts. Totally recommend the course!"
Ian Carlos Borrego Obrador
Econometrics and Statistics for Business in R & Python
"Diogo is an exceptional trainer. The course is explained in details and with great examples to practice. Moreover, he worked based on the feedback from his students and added valuable information such as scientific papers to encourage us to keep learning. I highly recommend this course to anyone who wants to deepen the knowledge in Econometrics and R."
Marina Iantorno
Forecasting Models & Time Series Analysis for Business in R
"This online course was a great experience for me. It provided usable and practical templates for all the course content, which I found valuable. The course was well focused and explained the main steps effectively. I would definitely recommend this course to anyone who wants to improve their skills and learn in a practical manner."
Eduards
Master Python for Data Analysis and Business Analytics 2026
"Yet another course where Diogo manages to capture an extremely relevant topic in just the right way. Easy to follow and highly recommended for anyone interested in the topic"
Julian Kopp
Master Time Series Analysis and Forecasting with Python 2026
"The course is pretty straighforward and goes straight to the point. You code beside the tutor and in addition the code is well structured and delivered for your fast personal use. Some constructive comments would be that the course should use bad/dirty data as in a real life case scenario, so we could learn how to clean it in a more detailed way. However as in my case, if you have any questions, the tutor himself makes a great job at answering them and even goes a little further and delivers an example of his answer. Great course and would totally recommend!"
Charlie Gzz T
Master Time Series Analysis and Forecasting with Python 2026
"Honestly one of the best courses on Udemy. As a junior data scientist who has no experience in handling time-series data, this course basically covers everything I need to know to start working on project on my own. The content is comprehensive, all the mainstream models are covered. I especially love the teaching style, because the instructor records every step of him doing the real coding, making mistakes, and correcting them. I had a lot of fun coding along."
Zhengji Wang
Master Time Series Analysis and Forecasting with Python 2026
"I just wanted to say how much I’m enjoying this course. The instructor is incredibly clear and didactic, making even complex topics easy to understand. The subjects covered are extremely relevant and well-structured. It’s been a truly valuable learning experience!"
Carlos Eduardo de Assis Bueno
Master Time Series Analysis and Forecasting with Python 2026
"Hey everyone! Just wanted to share my thoughts on the "RAG and Generative AI with Python 2024" course on Udemy. It's been an awesome experience! The course dives deep into Retrieval-Augmented Generation (RAG) systems, AI agents, and generative AI models, offering over 150 lectures and 10 projects. The hands-on approach really helps in grasping complex concepts, and the instructor does a fantastic job breaking down the material. If you're looking to enhance your skills in generative AI and Python, I highly recommend this course!"
Allan Soares Duarte
RAG, AI Agents and Generative AI with Python and OpenAI 2026
"This is my second course from Diogo. The guy is consistent and knowledgeable as always. He even created an AI assistant to help us comprehend the course better. I love the fact that analyzes everything to the smallest detail and since he is working for a firm and also has one of his own, gets to us students, solutions from an enteprise perspective which I find very helpful. 5 stars are all I can give you, but thanks for the knowledge!"
Dionysios Papadatos
RAG, AI Agents and Generative AI with Python and OpenAI 2026
"This is the second course I take that Diogo created and I really like how he explains concepts. What I also think is great are the bite sized videos."
Patricia Restani da Costa
10 Days: Prompt Engineering, Generative AI and Data Science
"The course was really useful in breaking down how xgboost function works. On top of that Diogo was swift in his response to my query around regression examples going out of his way to offer the additional examples. Would recommend to anyone interested in learning xgboost."
Khurum Pervez
10 Days: Prompt Engineering, Generative AI and Data Science
"That's the third course for me by Diego. The impression is the same as the other two. Knowledgeable with a happy and kind expression of explaining everything in detail while keeping things and terms as simple as possible to understand. He always helpful in any questions asked."
Dionysios Papadatos
10 Days: Prompt Engineering, Generative AI and Data Science
"Diego is wonderful with his explanations and learning while doing approach. It has helped me gain confidence with AI. No longer limited to discussion or study but practical insights and discoveries. It all looks so simple."
Anonymized User
AI Agents For All! Build No-Code AI Agents & Master AI 2026
"Nice topic and it helped me to understand the basic concepts of AI and pro and cons of using in day-to-day life."
Daita Venkata Srinivas
AI at Work: What Every Employee Needs to Know About AI
"I completed this course through my employer's Udemy Business software and I Loved it! I know the basics about AI, this course to my knowledge to the next level! I learned a lot and will be recommending the course to my team members."
Satara Lamb
AI at Work: What Every Employee Needs to Know About AI
"As a relative newbie to AI, I found this course accessible, yet also robust enough to improve my skill level and confidence."
Don Willard
AI at Work: What Every Employee Needs to Know About AI
"I believe this will be a good match. I came from Andrei's Complete Python 2022 course, and it looks as though his Data Science and Machine Learning chapters at the end will dovetail nicely with this new course. I firmly believe ZTM has improved in suggesting courses that are not only integral to my interests but also logical next steps along my learning path."
Charles Tompkins
Business Data Analytics & Intelligence with Python
"Awesome course! The sections of Econometrics & Causal Impact, Segmentation, and Predictive Analysis made this course one of its kind, although Statistical Analysis section is good too. Finding that much variety of material in a single course is rare. Diogo is an excellent instructor; definitely looking for his other courses."
Saboor Ahmad
Business Data Analytics & Intelligence with Python
"Diogo is an excellent teacher, complex topics, he make's it so easy to understand, i'm learning a lot of statistics and data analysis. Thanks Diogo."
Carlos Alberto Sanchez Ramirez
Business Data Analytics & Intelligence with Python
"Super well explained and great content. Diogo is always super detailed while providing easy-going lectures, with good examples and exercises, and also replies super fast to doubts and questions in his Discord server."
Joao Costa
Data Literacy and Business Analytics for Business Leaders
"This course is a must for everyone who needs some guidance on how to efficiently read the data and communicate business needs derived from it. Diogo teaches you how to make data-driven decisions in a structured manner through well-explained and practical examples, which again confirms his exceptional qualities as an instructor."
Filip Crncec
Data Literacy and Business Analytics for Business Leaders
"Pretty easy to understand, and great examples of daily life"
Andrea Franco
Data Literacy and Business Analytics for Business Leaders