The Windows logo key, located in the bottom row of most computer keyboards is a little-used treasure. Don't ignore it. It is the shortcut anchor for the following commands:
Windows: Display the Start menu.
Windows + D: Minimize or restore all windows.
Windows + E: Display Windows Explorer.
Windows + F: Display Search for files.
Windows + Ctrl + F: Display Search for computer.
Windows + F1: Display Help and Support Center.
Windows + R: Display Run dialog box.
Windows + break: Display System Properties dialog box.
Windows + shift + M: Undo minimize all windows.
Windows + tab: Move through taskbar buttons.
Windows + L: Lock the workstation (or switch to the Logon screen w/Fast User Switching enabled).
Windows + U: Open Utility Manager.