Merely reviewing, surfing the web to know more about photography is like reading a book to learning to swim. It just won't do. If you have friends who are in the thick of it, why not volunteer yourself to help him or her during his next commercial shoot? Don't charge anything as its more of a training for you and you should be more than welcome.
Remember, ask questions and more questions. And you are on your way to improve outside of a classroom.
Speaking of which, that's exactly what I will do in the coming weeks.
Ask and it shall be given...