In order to take advantage of the multiple users feature of Mac OS X, you need to set up user accounts.
The Mac OS X Setup Assistant, which I discuss in Chapter 1, does part of the setup for you. Immediately after you install Mac OS X, the Setup Assistant prompts you for information to set up the Admin user. If you are your computer’s only user, you’re finished setting up users. But if additional people—coworkers, friends, or family—will be using your computer, it’s in your best interest to set up a separate user account for each one, then specify what each user is allowed to do on the computer. You do all this with the Accounts preferences pane (Figure 2).