Windows 8 HotKeys are extremely useful to jump to where you need to go on Microsofts newest operating system. Here’s a condensed list of the more useful ones.
Windows logo key 
+ start typing to Search your PC.
Windows logo key +C to open the charms menu.
Windows logo key +D to activate desktop mode.
Windows logo key +E to open file explorer.
Windows logo key +F to open the Search charm for searching files.
Windows logo key +H to open the Share charm.
Windows logo key +J to switch the main application and the snapped application.
Windows logo key +K to open the Devices charm.
Windows logo key +L to lock the PC.
Windows logo key +O to lock the screen orientation (portrait or landscape).
Windows logo key +P if you want to connect a second screen or projector.
Windows logo key +R to open the RUN command.
Windows logo key +Tab to cycle through open applications.
Windows logo key +Ctrl+Tab to toggle through and snap any open apps.
Windows logo key +PgUp to move the Start screen and apps to the left monitor.
Windows logo key +PgDown to move the Start screen and apps to the right monitor.
Windows logo key +Shift+period (.) to snap an app to the left.
Windows logo key +period (.) to snap an app to the right.
Windows logo key +X to bring up the Admin menu
(The same as right-clicking in the bottom left corner).
