Windows 8 ushers in some major changes from the long-running Windows 7. It's Microsoft's first attempt at an operating system that works both for tablet and desktop users. Gestures enable you to quickly access settings and the Control Panel. Microsoft 8's Metro UI allows you quick access to information through Live Tiles, which are touch friendly, and dedicated apps are ideal for tablet users.
Microsoft has overhauled the appearance with a new flat design. You can still use your favorite programs in desktop mode, so you'll get a familiar experience with Windows 8 if you're using it on your PC.