Hello - When you're in the Contacts view, if you do a right click on a
contact you've created, you will able to select a category to apply to that
contact.
If you want to create different lists of contacts by category, you can try
the method that William Smith recently showed us on this list.
From the New icon, click "Saved Search", adjust the criteria or add new
criteria to your liking in the "search" list pane and click on the "Save"
button. (You could add the criteria, "Category is Friends") or something
like that. The sky's the limit.) Give your search a name, like
"Business-related contacts", "Friends" and so on.
If you have the Folder List open (Cmd+B), you can now select the custom
contact lists (saved searches) that you've created.
Jeff Chapman