I am surprised that Khan Academy is not recognized in this report probably because the scope is limited to just those offer by an accredited university. I think

I am surprised that Khan Academy is not recognized in this report probably because the scope is limited to just those offer by an accredited university. I think calculus and chemistry have helped many first and second years of college students taking introductory courses including myself. I think KA is probably the most popular MOOC for all ages, in the most accessible way given it only requires a YouTube account, which millions have for over a decade. But that's just my opinion. YouTube has a few really amazing courses available online. For example, UCB has a channel with up-to-date content that otherwise not available on MOOC platform. * https://www.youtube.com/watch?v=QMV45tHCYNI https://www.youtube.com/watch?v=QMV45tHCYNI is a very good class on data structure * https://www.youtube.com/watch?v=HyUK5RAJg1c https://www.youtube.com/watch?v=HyUK5RAJg1c and the rest has very good lectures on theory of computation * https://www.youtube.com/watch?v=_G6_-ljgmXE https://www.youtube.com/watch?v=_G6_-ljgmXE also very good for algorithms. I find MIT's version to be too theory based for practitioners. Anyway, I still watch MIT's just to complement anything missing (no two speakers can teach the same topic equally)