There are several differences between the Galileo and the more common Arduino board that many of you might be familiar with. The Galileo has significantly more processing power. However, it also starts up into a Linux operating system, and then exposes its programming environment in an Arduino-like interface. While you'll almost exclusively use the Arduino IDE interface in this book, you can also access the Linux capabilities of the Galileo. You'll learn more about this in Chapter 7, Going Further with Galileo.