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!
The library of things is also something many public libraries have now. Not just media, but tools, power tools, cooking pans and equipment, pod casting equipment. Definitely worth a look.