its my first time painting so i need some help. i would like a low presure gun cuz my compresor aint that big

 

ebay

 

LOL, good and cheap don't go together when messing with paint guns. You can pick up paint guns from Harbor Freight, Northern Tools, any paint store, I've even seen Wally World selling them. Since you said you don't have that good of an air compressor, I'd check those places out first