Membership login and registration questions

I am not sure how to use the membership plugin with regard to the login page and registration form.
1) Is the login page that the plugin uses is wp-login.php? Do I set up login re-direct and log out re-direct plugins to this page?
2) On that login page there is no link for registering. You can only login. How do new users register?
3) How do I customize the membership registration form. I am also a Buddypress site. So do I add customization in the BP form components?
Thanks!