This is kind of an open couple of questions.
First, how much are you wanting to spend on an airbrush?? If you want a good, general purpose brush that doesn't cost an arm and a leg, consider a Badger 200. If you want a nice, high quality brush, consider a Badger Anthem, Crescendio, or one of the Iwata's. You'd probably be best to consider getting it from an online company like BearAir.com. Although, if there's a Michael's near you, watch the Sunday paper for their 40% off coupons. They carry the Badger brushes. Also, you need to decide if you want a single or double action airbrush.
Some people like, and swear by, the Aztec brushes. I have one and have had pretty good luck with it. It's easier to clean than most of the others. But I still like my Badger 200 better for most work. In my area, it's also becoming harder and harder to find parts/accessories for my Aztec.
As far as kits go, give us an idea as to what your interests are. Present day, WW II, or WW I? German, Japanese, or Allied? What scale do you want to do? 1/72, 1/35, or larger?
We'd be glad to give you some ideas, if you let us know a little more.
Bill
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DML M4A2 Red Army
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-- There is a fine line between "hobby" and "mental illness". (Author unknown)