I'm sorry to have had to give such a low mark for this book. At first I thought it was a sort of Beginning Electronics for Robot building, and that was fine, but soon after I realised it was just a set of instructions aimed to build the robot on the cover. The first part focuses on the tools to be used, the second part on the building.If you want an introductionary guide to robotics this book doesn't do for you. If, otherwise, you want to buy a set of instructions to build a simple, non programmable robot just for the sake of it, this is perfect.