As Global Aviator said it's good to see some Motivation, if you get accepted you'll be taught everything you need to know about how it all works up at the rounded end so if you get a chance to perhaps do some "Work Experience" or just spend a day or two following around some of the Ops Boys and Girls you'll find that an invaluable insight into the inner workings which will help you down the track. It never hurts to know a little about the jobs of the people that support you!