Ctrl + C (or Ctrl + Insert) Copy the selected item
Ctrl + X Cut the selected item
Ctrl + V (or Shift + Insert) Paste the selected item
Ctrl + Z Undo
Alt + Tab to switch between apps. open
Alt + F4 to close the active list. Or leave the app to use the
logo key Windows + L Lock your PC or switch users
logo key Windows + D Show or hide the desktop computer.