Reddit reviews Auditioning On Camera: An Actor's Guide

This book might help you. I took the class with Joseph Hacker and I learned so much about filming myself and how to set up attractive shots. I second what everyone else has said as well, don't use a front facing camera. If this is what you want, get accustomed to speaking to the lens as if you were speaking to a friend. Spend time with it. Set up a camera (doesn't have to be on) somewhere in your room and get accustomed to having it look at you. It's not scary, and the more comfortable you get around (any) camera lenses, the better your performance will be. Break a Leg!