membership

I am not really sure where to begin. I purchase the membership plug-in, hoping that it would help me create a premium educational site that would adapt to my current theme. I downloaded bbpress- but have yet to customize it because I'm not really sure of the proper workflow.

Should I fully style and customize the form first and then try to configure membership. I basically want a membership site that offers users educational content. However – I also noticed that there is a theme available that may be suited for this.

I'm really confused and not really sure what to begin working on. Any help is greatly appreciated. T