We've got a drift day at Winton on Sunday if you wanna come along and watch, and talk to the guys who are into it and taking part in it.
For starters any car that's lightish and RWD will do, I'd recommend something cheap like an S13 (silvia) or a KE70 (corolla), which is cheap to mod and easy to fix when you ding up. Biggest mistake most people make is go out and get a pretty car that they're too worried to break/crash/write off... which usually stops em from giving it their all or experimenting with technique. Don't worry about looks etc, weld/lock the diff, get some aftermarket suspension and some cooling mods and get on the track.