Guide to System Preferences

In Mac OS, the System Preferences controls how your Mac runs and behaives, some settings change users specific settings such as Desktop and Finder, while other affect the entire system. If a padlock icon appears in the bottom left of a preference window, then you will need Administrator rights to change those settings.

New system preferences

For example, if you wanted to change Desktop and Screen Saver you get the following window with a list of possible settings.

Desktop preferences