This document provides an overview and introduction to developing apps for Windows Phone. It discusses the Metro design principles, tools available like the App Hub and emulator, and ways to build, test and distribute apps. Developers can code apps using the standardized Windows Phone SDK and tools, test apps on real devices by unlocking phones or using the new beta and private distribution services, and ultimately distribute apps to customers through the Windows Phone Marketplace. The presentation aims to provide everything developers need to know to create successful apps for Windows Phone.