2000 grit is extremely fine and there is nothing to sanding with it, you really can't mess it up unless you just sand one spot for hours or dont keep the paper wet, just keep a small stream of water going behind the paper with the hose as you sand . It doesn't take much to sand it,(just a few strokes (10) across a spot will work) just sand as if you were washing with a rag and dont use any hand presure, you will be able to see it working because there will be a white film starting to run. It is really easy, anyone can do it, just use common sense and don't sand in areas that you can't reach with a buffer, stay off of sharp painted edges, DON"T sand ALL the way up to an edge and keep your hose, paper, and car free af dirt particles that can get under the paper and scratch the surface. If your nervous about it I would start on a small section and go through the whole process one time and you will see how easy it is, if your paint is in good shape this will make it look like it just came out of the paint booth!