Keyboard shortcuts help you save time—you never have to take your hands off the keyboard to use the mouse! Now you can get more done with fewer clicks.
I often use ctrl+K to add links to email and documents. For this keyboard shortcut and others go here (link)
in Google Drive, Calendar or Email, press Shift+? to display a complete list of keyboard shortcuts. Find the shortcuts you may use often and memorize the keystrokes for future use. Click here, for more on shortcuts.