When i finish a series that i really love i am obsessed and try to find and buy anything i can pertaining to that series or from that author, i get crazy. So, when an official or unofficial guide comes out i always buy them. I always find them interesting, sometimes boring, but i always buy them. I also think its better when the author does them, because then you know all the theories are 100% true to their original meanings, but its also cool to see what other readers/authors ideas were.
So what do you think about guides to series? Hate them or love them? Let me know in the comments below =]