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!
Dang, I wish I knew about Freeplane years ago. Thanks!! I’m also entrenched in Kdenlive but I wonder if Shotcut has a better UI…