the book that has drawings of all the Skara Brae stuff and a lot more besides is Shee Twohig's "The Megalithic Art of Western Europe" . If you see a copy for less than £50 you're on to a bargain.
For Grooved Ware see "Grooved ware in Britain and Ireland" eds Rosamund Cleal and Ann MacSween . Oxbow were doing it for less than £20 before xmas. Not too much available web wise.