Address book available here should serve the same purpose as an ordinary address book would serve but with an added benefit of privacy. The address information in this book is encrypted to yourself to protect the privacy of both your contacts and yourself.
From the main menu, choose "Tools > Address Book". If you haven't, you will need to provide your passphrase to decrypt your address book.
When opened, the table interface of the book will have these columns:
Under this column, you can have the name of your contacts
Under this column, you can have the phone numbers of your contacts; multiple number of phones are okay here
Multiple number of e-mails can be put here
Your contact address(es)
Any notes
The use of the address book is almost identical to the use of the password book. Please refer to the help topic on the use of the password book.