Although I have, and have used most of the books on this list, for someone wanting to get back into the darkroom, I would second the nomination of Henry Horenstein's book. His first book gives you the basics that you need to get a decent print, in not a lot of time. Fred Picker, Tim Rudman, and others will give you other ways of looking at creating a great print, and should not be ignored, but for what the OP is looking for Henry Horenstein is the way to go.