OK so I read all the articles about site build it and even watched the video (Whew! It's very LOOOOOOOOONG!

) I want to make sure i understand everything before I buy.
So, Sitebuildit doesn't just flat out tell me what topic is most profitable, I basically tell it what I'm interested in and this brainstorming tool comes back with some data that I use to help me choose my topic. But ultimately it comes down to what I'm interested in right?
So then I start building my pages and then sitebuildit submits all my pages to the search engines and I start getting traffic.
Where are all these tools located that site build it comes with? Do I have to install software on my machine or how does it work? So I guess this brainstorming tool is built into the product somehow?
Sorry for all the questions, just trying to understand how it works.