TT's coments are all applicable, I've been painting cars and bikes for 25 or so years now, in my garage. I love 2K (2 pack clear over base system) but it's quite deadly as it contains cyanide, so I tend to use it sparingly. Acrylic laquer is the simplest and easiest to use, and air drys almost immediately at room temps, so you don't have to worry about bugs landing on it and sinking in after you turn the lights out to go to bed.
Beware though, most paints (and A/L in particular) hate damp humid environments and will "blush" or bubble if moist air is drawn into it during the curing process, so never spray any paint in high humidity, (over 60%) or if it's raining outside your open garage door.
I've recently bought a HVLP (High Volume Low Pressure) gun and find it particularly good for spraying Acrylic Laquer, as it reduces overspray by a huge amount, thus reducing materials used and negating the requirement to respray your neighbours car. The HVLP gun isn't much good for heavier paints like enamels and 2K that require a high pressure gun, but due to the problems highlited by TT, I'm trying to stay away from those sorts of paints anyways.
If you can't afford all the spray painting gear, get a hold of an old fashioned "pump up" fly sprayer, my brother used to paint his mate's bicycles with acrylic laquer with one of these things when we were kids, and the results were surprisingly good! Cheers, Terry.
