A one-woman media phenomenon and a leading YouTube influencer takes readers behind the camera, and deep inside her world. Justine Ezarik has been tech-obsessed since unboxing her family's first Apple computer. By sixth grade she had built her first website. A decade later, she became one of the Internet's first-and most popular-'lifecasters,' inviting people around the world to watch her every move, twenty-four hours a day, seven days a week. But it was a one-minute video about an itemized AT &