Advice needed...

What kind of paint should I paint my door with? Is a water based paint.. okay to use?
Where can I read step by step how to paint a fiberglass smooth exterior door?

Thank you

Cleaning and preping is almost more important than the top coat. Wipe the door with liquid sand paper or a towel with laquer thinner and then prime with Zinsser's Bullseye 1-2-3 After that two coats of a good name brand water based acrylic enamel should be what you need. A good china bristle brush or short nap roller but not foam. I add Floetrol to help the paint to flash which makes a very smooth finish. Floetrol® Latex Paint Additive

Sealer - Bulls Eye 1-2-3 Water-Base Sealer