I’ll start by plugging Harvard’s free courses catalog as well as Udemy
Edit: Gonna add 2 more I remembered-
Blender - I wish I had more time to learn it, but I did start the infamous “Donut Tutorial” once!
Watch Cartoons Online - Lots of good older stuff!
lichess.org is a fantastic online chess platform for players of all skill levels. it’s free and—what’s more–it’s ad-free (unlike the parasitic organisation that’s squatting on the chess.com domain).
it has one-on-one on-demand match-ups, tournaments, puzzles, user-published training courses, multiple chess variants, and so much more.
it’s one of only two online resources to which i deem donating regularly worthwhile (the other being wikipedia).
do check it out. chess is one really healthy mental habit to inculcate.
Lichess may be the best board game software for any board game ever. It’s that good.
They should branch out!! Does it support anything other than chess?
It’s great! Also for anyone that happens to be in the overlap of people that enjoy chess and go, and want to play go online as well, there’s online-go.com.
I don’t know that it has all the features that Lichess does, but it does have puzzles, tournaments, custom games, and so on.