This is extremely vague but I'm going to take a shot in the dark: The Last Book in The Universe by Rodman Philbrick? https://www.amazon.com/Last-Book-Universe-Rodman-Philbrick/dp/0439087597
The Last Book in the Universe by Rodman Philbrick. My favorite book actually.
I would try The Last Book in the Universe. It's an easy read, I think it would fall into the "young adult" age group. But it's heavy. Still sticks with me.