Definitely go to an autoX. Just one event made me realize how little I knew my car, a car that I thought I had known in and out and boy was I wrong.
It gives you a place to start, a place to stand back and look at your car as an instrument that you must learn to play, how to read what's going to happen ahead of time, and how to "tune" (pun intended).
It will do wonders on what type of mods you choose first.