The classic book on Chaos Magick is Peter J. Carroll’s Liber Null and Psychonaut. You don’t need much more than that. Phil Hine’s Oven Ready Chaos has the advantage of being free online, though it really isn’t a starter book. I also highly recommend a talk by Peter J. Carroll that you can listen to on youtube http://goo.gl/6WJF4. Hands on Chaos Magic by Andrieh Vitimus is fairly good.