Coaches Sanjeev and Rajeev have coached teams that made it to all levels of FLL championship, including the FLL World Championship from the states of Washington and Texas. This book describes design principles, programming ideas and strategies which have helped their teams excel at all levels of progression in FLL, with flying colors. This book is intended for FLL team members, coaches and mentors as a primer and reference. This book summarizes design principles including different kind of drives, elements of robot architecture and design of robot as system.