"...the book is called "LEGO Mindstorms NXT: The Mayan Adventure" and the book is targeted at ages 10 and up. No official pagecount yet, but it'll probably be over 300 pages. The book is a little different in that it uses a fictional storyline to setup situations where a NXT robot can 'save the day' so-to-speak. Each of the 5 bots has complete building instructions and programming instructions, but with commentary and explanations which I hope readers will appreciate... I don't just say "Click here" and set this to 50... I explain WHY my bots are built and programmed the way they are..."