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!
To add a couple more FOSS programs, OBS Studio and kdenlive are both really robust video production and editing software.
Hah, I used kdenlive in like 2008 to make a 3 minute clip out of a bunch of pre existing material. It was buggy as hell, and crashed every 5-10 operations. But I just saved a lot and got it done. Glad to see it’s still going (and presumably a lot more stable!)
Just used it recently to recut something super simple and it’s pretty good. Worth picking up and learning