Essential Shortcuts

Shortcut	Action
Cmd + C	Copy
Cmd + V	Paste
Cmd + X	Cut
Cmd + Z	Undo
Cmd + Shift + Z	Redo
Cmd + A	Select all
Cmd + S	Save
Cmd + Q	Quit app
Cmd + W	Close window
Cmd + N	New window/document
Cmd + T	New tab
Cmd + P	Print
Cmd + F	Find
Cmd + Space	Spotlight search

Pro Tip: Discover Any App's Shortcuts

In any app, go to the menu bar and browse through the menus. Every action shows its keyboard shortcut on the right side. This is the best way to learn app-specific shortcuts over time.