So yes it kind of starts like a tutorial....I was almost yawing in places, kind of thought I got yet another bummer book. WOW!!!! when this book takes off, it does so with a nail biting, white knuckle, can't put it down fire. I REALLY loved this book, the story was very compelling, extremely detailed and quite original..cannot wait to find out what happens next. Plus for a YA book it had a little more language(realism is very important and people do swear) and the sexual tension was more then you normally get in a YA book, but not disgusting like 50 shades....if you like really good dystopian scifi/time travel, this book is a great read and yes I know I don't go into alot of detail, I loathe those reviewers who basically tell me the entire story BEFORE I have read it....ever heard of TMI?