Coder dot com is basically a docker container t you get for free, plus vigil studio code in the browser. socratic is a youtube channel, and they've got a lot of great vidios describing little concepts,. I think it could work for a lot of languages, but it's python specific. Pretty printed dotcom is a guy who's doing a lot ofgreat ut vitios on flasks. And that was huge for me, because there's not a lot of people out there that do very specific things for flask.