With Windows 8 and Windows RT, you can use the keyboard shortcuts you’re already using, and you’ll find new ones too. For example, the easiest way to search on the Start screen is to simply start typing. Not on the Start screen? Press the Windows logo key‌  and you can quickly switch between Start and the app you’re in.

Press this		To do this
Windows logo key‌ +start typing		Search your PC
Ctrl+plus (+) or Ctrl+minus (-)		Zoom in or out of a large number of items, like apps pinned to the Start screen
Ctrl+scroll wheel		Zoom in or out of a large number of items, like apps pinned to the Start screen
Windows logo key‌ +C		Open the charms
Windows logo key‌ +F		Open the Search charm to search files
Windows logo key‌ +H		Open the Share charm
Windows logo key‌ +I		Open the Settings charm
Windows logo key‌ +J		Switch the main app and snapped app
Windows logo key‌ +K		Open the Devices charm
Windows logo key‌ +O		Lock the screen orientation (portrait or landscape)
Windows logo key‌ +Q		Open the Search charm to search apps
Windows logo key‌ +W		Open the Search charm to search settings
Windows logo key‌ +Z		Show the commands available in the app
Windows logo key‌ +spacebar		Switch input language and keyboard layout
Windows logo key‌ +Ctrl+spacebar		Change to a previously selected input
Windows logo key‌ +Tab		Cycle through open apps (except desktop apps)
Windows logo key‌ +Ctrl+Tab		Cycle through open apps (except desktop apps) and snap them as they are cycled
Windows logo key‌ +Shift+Tab		Cycle through open apps (except desktop apps) in reverse order
Windows logo key‌ +PgUp		Move the Start screen and apps to the monitor on the left (Apps in the desktop won’t change monitors)
Windows logo key‌ +PgDown		Move the Start screen and apps to the monitor on the right (apps in the desktop won’t change monitors)
Windows logo key‌ +Shift+period (.)		Snaps an app to the left
Windows logo key‌ +period (.)		Snaps an app to the right