I have bought a previous zenva bundle of humblebundle and the quality of the courses back then was quite poor.

The presenter either mumbled through the video course (with the subtitles/captions not helping at all as they only displayed “mumbles”) or using code that is dependent on functions introduced in later “chapters”. So running the code as instructed creates errors that your never sure if it’s because of you making a mistake or because of the above.

That was my experience a few years back so it might have improved by now (hopefully).