On your my address book, in your "My Account" section (see the top of the page on your upper right), you will be able to play with your address book. If you want a new contact to add, hit the +New button. If you want to import your contacts from let's say "Google" email, click the Import contacts button. You can also edit and delete the contact.
If you are having problems importing your contacts from your email provider, Please contact Cloudsponge at firstname.lastname@example.org They will help you take care of it!!!