There are several ways to add a friend to your Friends List:

1. Whenever you visit someone they are automatically added to your Friends List.
2. If you don't know your friend's user name and want to search based on their real name, use the "Find Friends" button on the Friends List page.
3. If you know your friend's user name, click on the "Add New Friend" command at the bottom of the friends list page.
4. Alternatively, click on Share command in any application and then click on 'By Friend'. Then use the 'Find Username' command - once you find someone using this command they are automatically added to your friends list.