Start menu
Click the Start Orb, press and hold the CTRL and SHIFT keys and right-click on an empty area in the Start menu. You’ll see the hidden GUI option named Exit Explorer. Note that this option was carried forward from Windows Vista to Windows 7.
Desktops allows you to organize your applications on up to four virtual desktops. Read email on one, browse the web on the second, and do work in your productivity software on the third, without the clutter of the windows you're not using. After you configure hotkeys for switching desktops, you can create and switch desktops either by clicking on the tray icon to open a desktop preview and switching window, or by using the hotkeys.