I'm a casual programmer, and I am entirely self-taught.
Even though I'm self-taught, I've been programming for the majority of two decades, and I have a decent area of expertise... although my main focus is in the C/C++ area.

I started out by modding several games, ranging from Duke3D/Quake 1 to more modern games like Neverwinter Nights, Torchlight and Worms 4 Mayhem. And using this as a learning experience I've been working on making my own 3D game engine.