Hello BruceJuice. My best recommendation for just starting out is to get Allen's DVD on airbrush make up. He has product recommendations and techniques to get you going. He also shows how to do to some amazing make ups on a haunted house time table. He also shows you how to get going and practice without spending a fortune.
Here's the link to his site. www.stiltbeaststudios.com
Let me know if you have other questions about it. Take care and good luck!