It seems that, whenever people get a notion to include some element of the hobby in some form of entertainment medium (books, TV, movies), they really only touch on it from an outsider's perspective, getting thin veneer from the outside surface.
For example: The show "ER" wanted to portray a reenactor in the ER who was injured at an event. So, they have him in there refusing anethesia and trying to stay "in character". They didn't get it. They guy would have been telling the doctors not to cut off his uniform because he had to wait 8 months to get it and it cost a king's ransom (not really... he was a farb!).
Here's an example of someone who "gets it": http://www.youtube.com/watch?v=rsz3Fpy0Jkk
Its an old ebay commercial and the humor that they use is funny to US because it reflects an understanding of who we are and how we operate.
So, while Hank gave some great advice, I would suggest that you get to some events, including as many different TYPES of events with different types of reenactors as you can. There is a ton to read on line because we like to debate minutae and philosophy, so take advantage of that.
Best of luck to you.