Ahhh yeah, that's cool James, it's gonna be fun. If you order online, I suggest www.megahobby.com, or www.greatmodels.com, or www.squadron.com. I've ordered from all of them ('cause sometimes things you want aren't always in stock), and they have all done me right, and they are all pretty reasonable, usually the only price difference being a buck or two.
For that airbrush, the best tip is to bust it out, and use it!!! I started with just a mix of flat black, and a couple of old toys I had laying around, and spraying 'em. The idea is to get the feel for the trigger, and the paint. The consistency is generally supposed to be like milk, so it is very thin, not like the thicker rattle can paints. Some people take a piece of cardboard, and do different techniques to get the feel. I think whatever is handy will be good enough. Just make sure to practice with the same types of paints you'll be using for your modeling. Another idea is to post the question in the Airbrush forum, or just search there for some hints. MikeV is an Airbrush God, and he posts on just about every Airbrush question out there. You're bound to run into him sooner or later, and he's got the goods!!! Can't wait to get started on the Corsair, let me know when you start yours!!!! Talk to you later James!!!
Heath