A Models Guide To Bodypainting
This is an excellent article written by airbrush extraordinaire Rich Diltz. "A Models Guide To Bodypainting" has some useful tips that are great for anyone who is not yet experienced with getting painted on.
Also Model Mayhem is the resource that I always recommend to anyone who is thinking about trying out photography modeling. There are lots of helpful forums and articles to help introduce you to the industy. And it's free to join!