This books' chapters on programming and design, CAD-style drawings, and abundance of screenshots make it easy for the reader to master the 'Lego Mindstorms NXT' kit and to build the nine example robots. Readers learn about the NXT parts (beams, axles, gears, and so on), and how to combine them to build and program working robots like a slot machine (complete with flashing lights and lever), and black-and-white scanner, and even a robot DJ. Chapters cover using the NXT programming language (NXT-G) we well as troubleshooting; RoboSurgery (building a robot to perform "surgery," like cutting a string); design; software' sensors' Bluetooth; even how to create a NXT remote control. LEGO fans of all ages will find this book is an ideal jumping-off point for doing more with their NXT kit.