The address application comes pre-loaded with a folder for each letter of the alphabet. For example:

But you can also create as many additional folders as you like, using the same folder commands as in the rest of KeepandShare.
To create a new address folder simply click on the "New Folder" command:

Some tips:
- Consider creating folders for special groups of people or businesses such as "School parents" or "Vacation home neighbors". These addresses will then be organized separately from your regular alphabetical grouping.