setting up checkout page pro sites

Ok so i have watched the videos on prosites and maybe i am just missing what i am looking for. How do i go about setting up the front end pages? I have all my levels created. I see the checkout page but do i manually create the page where the packages are displayed? Does a customer need to click on a link from there to go to a checkout page? Also the checkout page asks for a login but no sign up form. I guess i am confused on just how to setup the front end pages for new customers to signup for a site. thanks