More in Painting
If walls have previously been painted, there is no need for primer (unless you are painting over a very dark color). First, remove outlet covers, switch plates and window hardware.
Use sharp edge of chisel to scrape away rough areas or bumps, next, fill damaged or rough areas and holes with spackle. Use 2" putty knife to apply. Spread thickly, then remove excess.
Allow paint to dry completely, then sand and smooth.
Apply a 2-3" strip around moldings and outlets, next to ceiling and in corners -- before painting with roller.
Follow by painting with roller in long, broad strokes. Work from one point all the way around the room.
Apply second coat as needed, allow to dry, then re-install switch plates, outlet covers and window hardware