The address book allows you to save shipping addresses of your friends and family. You can also set an address as default shipping and billing address by checking the box next to "Set as default shipping/billing address", so you do not need to re-type every time.
Creating the address book is simple and easy. Login to your account, choose Address Book option, then you can add, delete or modify shipping addresses of multiple friends and family. You can store up to 5 addresses.