I've worked in the apartment industry for years and have used lots of professional painters and while they are far quicker, most people can do a better job on their own, it just takes longer.
We have painted our entire house and I have to say, prep work (which most pros don't do at all) is IMO, the most important step!
Here's what we do:
Step one is to clean, clean, clean. I wash all the walls very carefully. I also wash the baseboards even if they are...