If you want an "intuitive" approach, you might check out this new book: https://...

jacobolus · on Nov 3, 2021

I have read (part of) it, and it is excellent. I highly recommend it (alongside Needham’s VCA book).

But the lessons learned from there are largely orthogonal to the lessons you will learn from working with GA for a while.

To the grandparent, I would also recommend the very pretty book http://matrixeditions.com/5thUnifiedApproach.html