Ask HN: Linear algebra books/courses with a lots of exercises and solutions?

Lately I've been refining my linear algebra skills. I got the basics, like how a 3x3 matrix represents a rotation transform or how to get a general form for Fibonacci series via eigenvalue and diagonalization.

However, admittedly, math still scares me. I wince every time I need to write a shader and find a blog post filled with formulas. Often I know I am capable to solve a problem myself, but something in my head is so heavy that I need to push it really hard mentally.

I suppose what I need is some form of mental gym to "get used" to math. So I'm looking for a book/course/website that has a lot of exercises and their solutions. I have an old textbook from my college time, but it goes without solutions so when I got stuck it really demotivated me.

(And a side question: the same thing, but about calculus or other math fields)