At the time when I was obsessed with the film "The Blair Witch Project", I saw this in a movie retail store and snapped it up. Spoiler, only if you haven't seen the movie and don't know what it's about: Ok so it's fake, but who cares? The entire thing just feeds to the already-ficticious story of the Blair Witch, which was a great concept and very entertaining! It was fun to see it put together as a faux dossier.
In some respect, it's only handy for those that needed questions answered after watching the film who might have missed some details.
It was fun to read and get more out of the then-popular film which I enjoyed at the time. After a few years, I got rid of the book.