Well to start things off, first of all, I couldn't help but notice how similar Margo and Quentin are to the characters of "Looking for Alaska" Alaska and Miles. The unpredictability, impulsiveness, self-centeredness(if that's word) that made both Margo and Alaska and Quentin and Miles being the opposite. Of course these aren't the only similarities, but you get the idea. 
 I could say I liked "Paper Towns" because of part 1 and the little adventure they had until it was over in, I dare say, an unexpectedly brilliant way. 
 Overall, the book is funny, captivating, and well written but it is boring sometimes.