This document provides an overview of developing for Windows 8. It discusses the differences between Windows RT, Windows 8, and Windows 8 Pro tablets and devices. It also summarizes the Windows Runtime (WinRT), Windows Store apps, and how to build apps using HTML5/JS, XAML/C#, and C++. The document outlines the Windows 8 platform and tools and covers how to create Windows Store apps using Windows Runtime with different languages.