[Naa4]

The first time I really grasped the very basic concepts of linear algebra instead of just being able to calculate things like eigenvalues was after watching this series by 3blue1brown:

https://www.youtube.com/playlist?list=PLZHQObOWTQDPD3MizzM2x...

There is a series on calculus as well. It is honestly beautiful.

[jgalt212]

I concur. The calculus series is amazing.