If you buy SBI! be prepared to do a lot of reading. And that's one reason there is so much to read with SBI! because it was created to target people who don't necessarily have a business background but want to make money online. Don't worry about not having a "business brain". There are too many SBI! success stories from people who could barely turn on a computer before they bought it so don't worry about that.
If you want a better idea of how it will work you can downlod the action guide
http://demo.sitesell.com and watch the video tour
http://videotour.sitesell.com
This will help make things more clear.