| Viewing Contacts by Category | Changing the Default Category | Changing the Number of Contacts Displayed | Viewing by Alphabetic Group | Changing the Sort Order |
When you open your BT Yahoo! Address Book, the All category displays all of the contacts in your address book (unless you’ve changed the default category to view as explained in the next task). To view a different category and its associated contacts, just click the category name. 
Open your BT Yahoo! Address Book. 
Click a category name on the left.

The category and its contacts display on the right.
Categories are a great way to organise your contacts. To learn more, take a look at the Creating Groups of Contacts (Categories) tutorial.