This document provides an overview of Windows 8, including its various editions and key features. It discusses Windows 8, Windows 8 Pro, Windows 8 Enterprise, and Windows RT. The system requirements for 32-bit and 64-bit versions are also outlined. Some of the new features described include the Metro start screen that replaces the start button, the Windows Store app marketplace, picture passwords, and improved networking support. Features removed from Windows 8 include Aero Glass, desktop gadgets, and some games. Comparisons are made between Windows 7 and 8 regarding the start button, performance, and apps.