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!
It’s chess.com. We are the tech-savvy Lemmy weirdos who dig around for alternatives. I’d put my money on people just literally not knowing or thinking to check for an alt.
I didn’t know lichess existed until I found an extension that opens my chess.com match review into lichess, since the review is free there.