Steps in offering Pro Sites

I am searching for detailed documentation on "How to implement Pro Sites from Start to Finish. Thus far I have been successful in installing the multi-site network, installing and setting pricing for Pro Sites but I am lost from there. I feel that there is a great deal I am not reading regarding how the domaing mapping plays into this, how to set up blog templates and display them to the buyer and just so much more. Is there a "small-step-by-step online book" that will walk me through each step without having to go into each plugin and try to figure how they piece together? Kind regards,