Ask HN: Effective ways for finding top quality education online? I know one way

I want to expand my bag tricks for finding quality education. Going to websites like Coursera is often a hit and miss. Currently I know one trick and its success is amazing for finding quality education. I go to the search bar of HN, type in what I want to learn -- while trying to have an idea of how the algorithm will pick that up -- and look if I see a recommended course that scores higher than 50 points (preferably > 100). Then, I'll check the comments to see if it's a good course. If the top comment says it's a good course and there are no clear objections underneath it, I will learn that. At the very least it assures for an above average quality course but almost always it is stellar material. It definitely beats Google. Do you know other tricks? Or do you know other communities (e.g. certain subreddits) for which the same trick would work?