No, there is not a tutorial for this, but it is not difficult.
Use the Data Assist wizard to create pages to manage the users table.
I'd set the wizard to create the pages in an admin folder.
the difficult you would want to add user level authentication so that the admin pages where only available to admin users.
there is an older tutorial on user level authentication here:
it was written for security assist 1, but the concept is the same.