After you decide on a paint color and have purchased your paint, it is time to prep the room before you began painting. First, you need to move all of your furniture to the middle of the room, away from the walls and cover it with paper or plastic drop cloths. Remove outlet covers and doorknobs, and patch all holes in the walls. If you do these things first, before you begin to paint it will help to ensure a better outcome of any interior painting project.
Next, clean all areas to be painted. Clean walls and woodwork to get rid of dust and grease from all of the areas that you will be painting. Any grease that is not cleaned up will keep the paint from adhering to the surface properly. Dirt and dust that is not cleaned up properly will bind itself to your freshly painted surface. Clean with a mild detergent and allow the surface to air dry.