@tezcat whats your budget i can recomend some good liquid mask and paints from mr miller
does water and solvent based as for a compressor this is one im using its ok but not the greatest
http://cgi.ebay.co.uk/AIRBRUSH-START...item1e5f3fdbbf if on a small budget if you want to get anything proper decent look at the iwata range of brushes and compressors