How do I get support for my Mac mini? Go to > About This Mac. The serial number is listed. You can also find the serial number on the bottom of Mac mini. See the Apple Support article Browse manuals by product.
How do I get help for an app? When you’re using the app, click the Help menu in the menu bar at the top of the screen.
Where is the safety information for my Mac mini? See What to do before you sell, give away, or trade in your Mac.