Some usefull windows shortcuts that you can use in your everyday work.
Windows Key + D – Show or Hide the Desktop
Windows Key + Space bar – Switch Input Methods
Windows Key – Open the Start menu
Windows Key + S – Open the Windows Search
Windows Key + Tab – Open Task View
Windows Key + C – Open Cortana
Windows Key + L- Lock your account
Windows Key + A – Open the Action Center sidebar
Windows Key + I – Open the Settings window
Windows Key + E – Open the File Explorer window
Windows Key + PrintScreen – Takes a screenshot of the screen and stores it in Pictures > Screenshots
Windows Key + Left arrow – Snap the active window on the left side of the screen
Windows Key + Right arrow – Snap the active window on the right side of the screen
Windows Key + Up arrow – Snap the active window on the top of the screen
Windows Key + Down arrow – Snap the active window on the bottom of the screen