Apple Mac mini (Early 2009) - Manual (Page 17)

Chapter 1 Ready, Set Up, Go 17
If you don’t intend to keep or use your other Mac, it’s best to deauthorize it from
playing music, videos, or audiobooks that you’ve purchased from the iTunes Store.
Deauthorizing a computer prevents any songs, videos, or audiobooks you’ve purchased
from being played by someone else and frees up another authorization for use. For
information about deauthorizing, choose iTunes Help from the Help menu in iTunes.
If you don’t use Setup Assistant to transfer information when you first start up, you can
do it later using Migration Assistant. Go to the Applications folder, open Utilities, and
double-click Migration Assistant.
Step 7: Customize your desktop and set your preferences.
You can easily make your desktop look the way you want using System Preferences.
Choose Apple ( ) > System Preferences from the menu bar or click the System
Preferences icon in the Dock. System Preferences is your command center for most
settings on your Mac mini. For more information, open Mac Help and search for
“System Preferences” or for the specific preference you want to change.