UPDATED Feb. 2023 – When friends ask me what online courses I've taken, I say, "You'd better sit down!" Yes, it's a long list – and in 2020 it has experienced an above-average burst of growth : my goal was to have at least some good things to remember that evil Covid year by... such as an exciting new batch of online courses. So, which of the courses I took would I recommend as good ones? Virtually ALL OF THEM! Think about it : why would I take, and complete, an online course that I don't think is good? If I have a false start and don't like it, I don't finish it – and it won't be on this list! The following are 27 courses (at various levels) I took in their entirety, and I recommend as good ones to take – provided, of course, that they fit your background and interest. NOT included: documentaries, short tutorials and the like. Nor am I including courses I took in college or grad school, nor any classes I took in person, such as sa