And then go through some of the threads in this forum. That should give you a good idea of how FAST works. Remember to use the Site Search on top of the page. It can dig out a lot of good stuff as well.
Take a look at this new thread [webmasterworld.com] where Robert has found some new interesting this in the algo. I hope that it will confuse you too much though ;)
Do come back in here with your questions once you get a grip on it.