is there a tutorial for using the Automatic Login? 
no, there is not a tutorial for automatic login.
the basic idea is that you use the set cookie behavior to store the user name and password entered, triggered off whether the remember me button is checked
have another set cookie behavior to save an auto login cookie if the auto login box is checked.
you then add a second authenticate user behavior to the page that triggers if the auto login cookie is set and uses the username and password cookies.
use the wizard to generate the pages with the auto login feature enabled to inspect ow it gets created.
