Minecraft: The Official Mojang Redstone Handbook
It's time to wire up and get connected to one of the most complex areas of Minecraft, Redstone. Redstone experts guide you through all aspects of working with Redstone including mining, smelting, using repeaters, circuit components and circuit designs. This handbook also includes exclusive tips from game creator Notch himself and some of the most extraordinary Redstone creations ever made. So power up and get switched on to Redstone!