Given the situation we are in (pandemic) I have looked for the best way to make math videos for teaching. I have tried with digital whiteboards, notes in LaTeX but they do not convince me at all.
Browsing YouTube I found this channel that is dedicated to sharing math topics. His videos are lovely and I would like to do something similar with my students. Do you know what kind of programs this guy uses to make those kinds of animations?
Yes, he developed his own Python library called manim (math animations) for making math videos.
He has his own library still, but it has been branched off to a community edition which is where you want to start.
https://www.manim.community/
It's fairly easy to use and there is a lot of examples you can find in the documentation. It's also very fun to use!