bojangles157

Hello folks, I'd like to start modding. game dev is a bit of a hobby that i'm delving into. software development is a part of my day job and I've become a bit obsessed with this game and want to take a whack at breaking it with poorly designed mods. What SDK's are people using to mod this and how should i go about starting? forums, videos, wikilieaks etc... Any help is appreciated, cheers.