Windows logo key+spacebar
Switch input language and keyboard layout

Windows logo key+O
Locks device orientation

Windows logo key+,
Temporarily peeks at the desktop

Windows logo key+V
Cycles through toasts

Windows logo key+Shift+V
Cycles through toasts in reverse order

Windows logo key+Enter
Launches Narrator

Windows logo key+PgUp
Moves Start Screen or Metro style application to the monitor on the left

Windows logo key+PgDown
Moves Start Screen or Metro style application to the monitor on the right

Windows logo key+Shift+.
Moves the gutter to the left (snaps an application)

Windows logo key+.
Moves the gutter to the right (snaps an application)

Windows logo key+ C
Opens Charms bar

Windows logo key+I
Opens Settings charm

Windows logo key+K
Opens Connect charm

Windows logo key+H
Opens Share charm

Windows logo key+Q
Opens Search pane

Windows logo key+W
Opens Settings Search app

Windows logo key+F
Opens File Search app

Windows logo key+Tab
Cycles through apps

Windows logo key+Shift+Tab
Cycles through apps in reverse order

Windows logo key+Ctrl+Tab
Cycles through apps and snaps them as they are cycled

Windows logo key+Z
Opens App Bar

Windows logo key+/
Initiates input method editor (IME) reconversion

Windows logo key+J
Swaps foreground between the snapped and filled apps

Semantic zooming is performed by holding down control and using the mouse
wheel.