I just cut my bangs last night. I have always done it at home, and this was my first attempt at it back in late Fall 2012. At the time, my hair was barely in a tiny little pony tail in the back. Here are my favorite tutorials for at home haircut of Bettie Bangs (so named after Miss Bettie Page, the most famous iconic person to sport the look):
Cherry Dollface
Susie Brown