Post date: Oct 13, 2011 8:39:11 PM
When you're heavily involved in your tasks, it's easy to clutter your Desktop with an array of Finder and application windows. Rather than hunt and click through the pile to find the one you're looking for, use Exposé instead.
Exposé allows you to easily navigate through your window clutter by highlighting certain windows, giving you an overview of all open windows (shown above), or clearing everything away.
Exposé is a built-in feature that can give you fast access to any open window with a few keystrokes, temporarily hide all open windows, or scale all windows down so you can get an overview of all of them. Here's how to use Exposé.
To see this in action...If you currently don't have any windows open, other than your web browser window, open a few so you can see Exposé in action.
To view all your open windows, press fn+F9. To select a window, click it. To return your view back to normal, press fn+F9 again.
Tip: Want to learn more about Exposé? Check out the built-in Help guide on your Mac in the Finder, choose Mac Help from the Help menu and type expose in the search field.
Information from: http://support.apple.com/kb/HT2503