"Get to know your favorite YouTube stars--Ryan ToysReview, HobbyKidsTV, JillianTubeHD, and EvanTubeHD--in this hilarious, insightful, and cool look at their lives behind the camera. This full-color book includes an introduction by the one and only CaptainSparklez and comes with games, quizzes, and never-before-seen photographs of the stars and their families. It's sure to be beloved by the YouTube-loving kid in your life. So, if you or someone you know wants to have tons of fun with your YouTube friends and their families--and over 20 million people already have with this all-star crew--it's time to Watch This Book! pocket.watch series." -- Publisher's annotation.