Hi, i m also just getting into the "spray-part" of the hobby... I read that an Iwata Eclipse is a decent pistol for starters. U have few choices in the Eclipse range.
For colours i use Parma Faskolor. I m using the paint without thinning it.
I ve learned a lot from Peter Chang's videos on Youtube.
http://www.youtube.com/watch?v=5s4O-kK0ubM