I liked this book because of its humor. You have to be mature to tolerate the kind of jokes this book has because some of them are very sexual and/or rude. I would recommend the book to a friend because it still has a moral to it and the story is deep in some parts. Some of my friends could even relate to it because in the book, the main character loses his father at an early age. Throughout the book, Tom gets to know his father as a person a little more due to the clues he left in his old books.