It's a Physcological horror book written like a journal; and the more you read the weirder the text is put into different shapes, put backwards, in different colors, in different fonts, etc.
The point is that the more you read the crazier it gets because its a journal of man slowly losing his mind while jumping down a rabbit hole of conspiracies all starting with the murder of a blibd man who wrote about a movie that doesn't exist (and he wrote about what he saw; which is impossible because he is *blind*)