Ctrl + X Cut the selected item.
Ctrl + C (or Ctrl + Insert) Copy the selected item.
Ctrl + V (or Shift + Insert) Paste the selected item.
Ctrl + Z Undo an action.
Alt + Tab Switch between open apps.
Alt + F4 Close the active item, or exit the active app.
Windows logo key  + L Lock your PC.
Windows logo key  + D Display and hide the desktop.
Ctrl + A Select all items in a document or window.
Ctrl + D (or Delete) Delete the selected item and move it to the Recycle Bin.
Ctrl + R (or F5) Refresh the active window.
Ctrl + Y Redo an action.
Ctrl + Right arrow Move the cursor to the beginning of the next word.
Ctrl + Left arrow Move the cursor to the beginning of the previous word.
Ctrl + Down arrow Move the cursor to the beginning of the next paragraph.
Ctrl + Alt + Tab Use the arrow keys to switch between all open apps.
Ctrl + Shift with an arrow key Select a block of text.
Shift + Delete Delete the selected item without moving it to the Recycle Bin first.
Windows logo key  Open or close Start.
Windows logo key  + D Display and hide the desktop.
Windows logo key  + Alt + D Display and hide the date and time on the desktop.
Windows logo key  + E Open File Explorer.
Windows logo key  + L Lock your PC or switch accounts.
Windows logo key  + M Minimize all windows.
Windows logo key  + P Choose a presentation display mode.
Windows logo key  + Shift + S Take a screenshot of part of your screen. 
Windows logo key  + T Cycle through apps on the taskbar.
Windows logo key  + period (.) or semicolon (;) Open emoji panel.
Windows logo key  + comma (,) Temporarily peek at the desktop.
Windows logo key  + Plus (+) Open Magnifier.
Windows logo key  + Ctrl + Shift + B Wake PC from blank or black screen