I would actually rate this book 4.5 stars because it isn't entirely perfect, but then again-very few books are (in my opinion). 
 When I first got to this book at the bookstore, I wasn't really sure about it so I put it down and didn't buy it. 
 But one of my friends said it was really good and I got curious. After a bit of confusion because of the German title(s) I decided to read it in English. 
 It took me some time to get into the book, but after some struggles in the beginning I just couldn't put it down any more. 
 I really like the way it is written and the story is just beautiful. 
 I especially loved one scene, in fact it's the one, that you can read at the back of the book. ("I walk around the school hallways...") This scene really fascinated me and after reading the book I found myself thinking quite a long time about it. 
 The way Charlie shows you his world and tries to figure out his life, making new friends and falling in love seemed a bit weird to read at first, but after some time, I figured it was really cool in it's own way. Charlie seemed like a really innocent person to me and it was really interesting to see everything through his eyes. 
 One bad thing about it is that it has only 231 pages, which is not very much in my opinion and I would have loved to read more. 
 Altogether it is a very good book, not perfect but very good and I really enjoyed reading it. 
 So give it a try! It's worth it.