Having participated in the creation of this book, I have to admit some bias to the review. 10 Cool Lego Mindstorms Ultimate Builders Projects contains 10 original Lego Mindstorms creations.  The model I submitted is DominoBot. It was a great challenge to build and create the building instructions for this model.  The book contains step-by-step instructions on how to build each of the 10 robots.  The book should challenge the intermediate enthusiast and contains some great ideas on building techniques. If you are interested in this book, it can be obtained by most retailers including Amazon, Chapters, Ingigo, and the publisher Syngress. I have also included building instructions in the Instructions section of this website.