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!
Sadly, yeah. Unfortunately, I’m not really capable of sounding the alarm, and whoever runs the Xwitter page for Librivox have not posted anything in over a year. They should be crying out for aid, but there’s crickets in the public eye.