Buy the Mindstorms Set 8547: Mindstorms NXT 2.0 IOB w/ manual | GoodwillFinds
The Unofficial LEGO MINDSTORMS NXT 2.0 Inventor's Guide by David J. Perdue, Laurens Valk: 9781593273064 | PenguinRandomHouse.com: Books
LEGO MINDSTORMS NXT One-Kit Wonders: Ten Inventions to Spark Your Imagination: James Floyd Kelly, Matthias Paul Scholz, Christopher R. Smith, Martijn Boogaarts, Jonathan Daudelin, Eric D. Burdo, Laurens Valk, BlueTooth Kiwi, Fay