The idea of a Community specifically for courses can be tried out. However, I think that Steemit's current range of functions would set limits: a table of contents with a search function would be the first unrealistic expectation...

I also find thematically categorised Communities with corresponding educational offers on their main topics more logical.

However, we agree that these new formats should be expanded and enhance the content of Steemit. I myself am thinking about some topics for which there is little to no valid information online - I don't have the time yet, but the day will come... ;-))