I've painted a thousand cabinets, ok, maybe not thousands...let's see - four kitchens now, four bathrooms, and more dressers and pieces of furniture than I can count - and each time, I've done things a little differently. Each time, I learn a more efficient way, or a better way to get a smooth finish, or I use a new paint. So I can't say that I have an ironclad, tried-and-true method to painting cabinets but I can say that I've had great success in the arena. The same story follows the most recent endeavor of painting our current upper cabinets in the kitchen.
First, I removed all of the doors and the contents of the cabinets.
I wanted to replace the old cabinet pulls with new knobs so the next thing we had to do was fill in the old hardware holes and drill new holes.