You need a regulator at the gun to slow the air down some, I think around 40psi is good for suction style. The gravity fed(HVLP) gun has far less overspray & waste of material. I am a novice also, doing mine 'cause no one wants to paint it at any price it seems. I have had good luck w/acrylic enamel using a hardener-its solvent resisitant, not deadly(some paints require fresh air apparatus)& seems fairly forgiving. Most like the base coat/clearcoat method but I have a hard time w/clear. Search for "basics of basics"(?) here or go to autobodystore.com, they have a forum & FAQ. Brian