Your Address Book has three different kinds of views: List View, Card View, and Combined View. "Combined View" allows you to view your address book on the left-hand side of the screen, and on the right side, you can see individual addresses. You can click on new contacts on the left side and the new contact will appear on the right side. This makes it quick to navigate between contacts without having to click on the "back" button in your browser.
Using the “Customize” screen for your Address Book, you have the option of choosing what kind of information you want to show for your contacts listed on the left-hand side of the screen. You can have as much or as little information showing for your contacts at once.