You can experiment with the options available for
customizing an address book. Log in as the user John with a
password of hello, so that you will see the options available to
administrators. Once you log in as John, select the
"Administration" link next to any of the 4 sample books.
Address Book Administration Demo
If you can't view one of these demos currently, someone may have deleted it
(since everyone can obtain admin rights to these address books). The demo books
are reset every couple hours, so you can try again later.