The most valuable training course I have experienced - including my graduate courses in college! The exercises tasked my understanding of the material, not my ability to regurgitate the examples. Highly recommended for any professional who wants to provide value to their clients.

Great course! DAX is so powerful. Marco and Alberto just simply DAX experts! Thanks!

Great course ! This course deserves to read more and more as DAX coding reference and to be recommending to all the Power BI learner. Thank you so much for your teaching.

I think it's been a good course, and that Marco and Alberto do a great job explaining DAX. I'm still not fluent, but feel slightly better equipped to go forward.

An absolutely amazing course. Well designed Well explained Well delivered Well everything. Can't wait to delve into what's coming next.

The courses are indeed the masterpiece and excellent but, please fix the site. Its very slow and works poorly if the internet speed is little low. Fix the site please, this is the only demerit I find and that's why rating this 4 star but, again the courses are excellent and so as the instructors.

• – Please, can you provide more details about your issues? Most of the time that a user experiences a problem with the videos, it is because of a firewall or an antivirus that slows down the connection. You can lower the resolution of the video to reduce bandwidth consumption if your internet connection is slow. If you experienced other issues, please clarify so we can investigate. Thanks for your feedback!
  Reply by SQLBI (May 8, 2020)

When it comes to DAX Marco and Alberto are the real maestros. They are the author of the "DAX Bible" (Definitive Guide to Dax) which is the base of this course. There are other good DAX instructors out there but I have not found anyone that know about DAX inside out as them. The Mastering DAX goes really deep in the fundamentals of DAX and both instructors are very clear on the theory and practical examples that you need to know to master the language. I am very satisfied with this course and it really improved my knowledge and power when it comes to solving business problems by creating BI reports. I highly recommend this course.

This course is unbelievably good. I'm so impressed with Marco & Alberto's ability to take extremely complex topics and explain them in an understandable way.

Fantastic. So happy I chose this course, it was well worth it! What I especially liked was the fact that 90% of the lectures was spent hands-on in PowerBI, writing DAX, looking at the result, seeing what works, what not and why not, improving the code, this way giving you the understanding you need... Also, none of the video of the lectures were edited. They're all single takes, which showed how much teaching experience and confidence Marco and Roberto have. it made everything a much more natural and valuable experience than a lot of other paid online material.

the bestest course! :-) seriously, top notch!

Excellent course congratulations to everyone keep me informed of new features. Very soon I will continue with other courses with you. Greetings Marco Bajana

Very nice and helpful!

Marco and Alberto, I want to thank you both for such a wonderful course. I completed the first one and updating myself with this one also. I could clear the Microsoft certification for Power BI. Thank you so much. You guys are amazing. I truly recommend this course to all Power BI users.

Thank you Marco and Alberto, this course is obviously the best around, for the content, of course, but I also very much enjoy the 2-person animation and the large number of exercises (from an instructional design point of view, a very well-built course).

i get additional insights every time i watch this course