Here are a few painting tips to help the job go more smoothly:
When you remove your outlet covers and light switch covers for painting, tape the screws to the backs of the covers so you don’t have to look for them when you’re ready to put them back on.
Alternatively, you can use Ziploc storage bags - just put each switch plate and its screws into a small Ziploc bag, marking its location on the bag. (This also works well for curtain hardware.)
When painting a room, if you don't finish all in one day, just cover your roller with a tightly wrapped plastic bag or saran wrap, and put it in the fridge. When you take it out the next day it will still be wet and ready to go.