I get the impression that you are thinking about trying to teach yourself. That's a real bad idea if you also want to start out with glow powered equipment. Find a local club, get an instructor, and read a LOT before you buy anything.

The AMA is a national organiztion that provides liability insurance (and other stuff), and pretty much any club you join will require AMA membership. Their site has a "Club Locater" page, where you can plug in your Zip Code and get a list of clubs close to you.
http://www.modelair.org/

If you're determined to try it yourself, or your budget won't allow you to spend $500 to $600 to get started, then about the least expensive option available is a small electric plane called the Aerobird Challenger. It's pretty ugly, it's made from foam, it won't fly in winds much over 5 to 8 MPH (especially starting out), and it only has 3 channels of control, BUT it can be bought complete, plane, radio gear, electric motor, battery pack and charger, for about $130 to $150.

Keep in mind, the radio components can NOT be used in a standard glow powered plane if you move up (or in ANY other plane for that matter), but people have taught themselves to fly with them.

Do NOT buy anything that is less expensive than the Aerobird, or anything that is 2 channels or less. IF you happen to get one that actually flys, it will fly badly, and you'll probably be disappointed.

Good luck with whatever you decide, and welcome to RCU!
Dennis-