In reply to origamib:
Yep, Rockfax Eastern Grit is the place to start. Once you get hooked, you'll want to start collecting the brilliant BMC guides, starting with Stanage.
You might want a Peak bouldering guide too, but that's a lot of duplication once you start buying the definitives. Maybe try and pick up an old bouldering guide? Bear in mind that when it's cold and time is short, you can get a lot done bouldering, have a lot of fun and really improve your climbing. On grit, if you don't boulder, you're missing the point.
Post edited at 12:52