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 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?
um, chess 960? lol