First, click on the person you want to add contact information to. Then, click the "Contact" button in the sidebar (On the right side of the "Personal", or if the person has partners, the "Partners" button). After that, click the "Edit my details" or "Edit EXAMPLE's details". Now you can type in the email address. You can also add the Website, Blog, Photo Site, Home Tel, Work Tel, Mobile, Skype, Address, etc. of the selected person. Hope this helps .