I need help setting up Blogs MU

I am trying to use blogsMu and Pro sites. I am not sure if it should be used like this. There were little directions on setting up a site selling site like EduBlogs. I want my clients to be able to set up their sites on their own. I wanted to sue the farm pack to allow them to select the theme and the client build the site. I have posted this in the forum I hope im not double dipping. honestly im a little lost and am losing hope.

I am using
Easy blogging Pro Sites and Membership. I really would like more direction in setting this up. I am just now learning how your systems and themes work.

Thank you soo much in advance.