This book takes the reader through a fast paced brief on digital computers and computer programs. The journey then continues with a thorough introduction to the C programming language encompassing the restrictions and enhancements provided by the Arduino environment. The book then builds upon the language features adding practical applications for the reader's C knowledge while interacting with the Arduino hardware. Interrupts, timers and ports are investigated while developing competent C skills. The control of servos and stepper motors is explored and software libraries evaluated. Program development techniques and state machines add to the mix. Communications interfaces are analysed and developed to thoroughly extend the reader's C skill set. These are then extended by exploring algorithms and data structures directly relevant to the platform and Arduino based projects.