Question for LOST fans!?

Do any of you have some of the LOST season guide books? I'm only in season 2, and I wanted to buy some, but I'm sure with all the shocking reveals in LOST, they go out of date so fast. Does anyone know what's in the LOST Encyclopedia (a href="http://www.amazon.com/Lost-Encyclopedia-Tara-Bennett/dp/0756665949/ref=pd_bxgy_d_img_b)?" rel="nofollow"http://www.amazon.com/Lost-Encyclopedia-…/a Will there be anything in the book that wasn't in the series?