I read several books on possession and exorcism and did some study on epilepsy. I tried to look at everything from a birds eye perspective and not let my own point of view get in the way.
Sometimes when I pick up a book off the shelf, when I'm buying a new book to read, I'll look at all of them and they all have the exact same words inside, but I'll think that one is meant to go home with me. I'll never pick the first thing off the shelf, I'll always go one behind.
I read Christopher McDougall's book 'Born to Run.' If running were a religion, this would be its bible. I actually scribbled my favorite passages on my arm to read during the race.