Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: easiest and fastest way to begin writing a mobile game

i spent 2 hours reading this book from a shop's bookshelves, and i can start imagine how i can design an app or game right after that. and i can even imagine how my codes will be structured and written. amazingly easy to understand. great for beginners. however, there's one aspect which i do not quite understand--it is about the networking(every sent packet is done through placed calls or sms?, or can it be done as infrared/bluetooth. i hope you can include this as addendum to a reprint of this book.