Painting for me is an exercise in meditation… I do it whenever I have an opportunity. I agree with most of what Mr. He stated, but I deviate as follows:
I never use rollers… I always use a brush… even for big jobs.
I never place any paper or drop cloth on the floor, as I don’t make a mess.
Some additional suggestions:
I like to use a water-based cement paint… on everything, including wood. The water-based paints are easier to work with, IMO, and thus touch ups are easier in the future too. I also like a high gloss paint, rather than the flat paint typically seen in Taiwan. IMO, the high gloss paints are easier to clean (when they get dirty, but I think they resist dirt better than a flat paint). Flat paint seems to me to get dirty as soon as it ries, and then it cannot be cleaned. One drawback to high gloss… it reveals the imperfections in your walls… but I prefer clean to dirty but apparent perfection in smoothness.
Finally, get yourself a CD player and some Grateful Dead CDs and turn the volume up and have a beer, or wine, or whiskey, or whatever else you might enjoy, and allow yourself to get into the rythm of the music as you apply paint on the brush to your walls.