Wolfram Donat 
Getting Started with the micro:bit [PDF ebook] 
Coding and Making with the BBC’s Open Development Board

The micro:bit, a tiny computer being distributed by the BBC to students all over the UK, is now available for anyone to purchase and play with. Its small size and low power requirements make it an ideal project platform for hobbyists and makers. You don’t have to be limited by the web-based programming solutions, however: the hardware on the board is deceptively powerful, and this book will teach you how to really harness the power of the micro:bit. You’ll learn about sensors, Bluetooth communications, and embedded operating systems, and along the way you’ll develop an understanding of the next big thing in computers: the Internet of Things.