Hi Blind_man,
Although I do not post often here (I should make a point of that

), I want to add my two cents.
If this is your first airbrush then my advice is to splash out a bit more on the compressor and get a simpler airbrush, then once you get the hang of it (and the money of course

) get a better model.
Get a compressor with a tank. Most airbrush compressors are without a tank and give you a pulsating supply of air (although a pressure regulator solves this a bit).
The compressor must be equipped with a pressure regulator and water trap (you can get those combined).
If you can spare the money check out these guys
bambi air . Harder and Steenbeck also sell them under their own name (just do a Google search for them). These are normal compressors which can deliver pressures up to 116PSI (I know a bit much, but then you can use for other applications). But the best part about them is that they are very, very silent. The downside: their price, they will set you back about €/$ 500 (ouch

).