Now windows 8 are used by many people. So if you don’t know then know following shortcut keys:
Windows Key + D – back to the desktop
Windows Key + C – Shows up the Charms bar. The charms bar is basically a “settings” type bar that gives you different options depending on which program you have open. Also, it lets you share something or perform a quick search.
Windows Key + R – Brings up the Run dialog box.
Windows Key + Z – This will bring up the app bar in a full-screen Metro app so you can execute commands.
Windows Key + E – Opens Windows Explorer.
Ctrl + Shift + Esc – This will bring up the Windows 8 Task Manager