Ozzie,
FNG is right. However, you need to convince people that you're to be taken seriously, and it'll help if you're known and have a bit of a track record. So you need to start the publicity soon. Let your local paper know that you're starting your PPL, and youwant to get it on your 17th birthday. Tell them when you get it. Once you're qualified, you'll need a lot of flying experience before you can safely fly round the world solo - do some interesting flying, enter competitions and rallies, and get more publicity as the youngest person to enter (win?). That way, when you actually reach the point of being able to consider flying round the world, your name will be recognised, you'll be taken seriously, and you'll have a better chance of getting sponsorship. At the moment, if you tell people you want to do this when you can't even fly, they won't believe it's possible - sorry, but that's reality. You need to change that by your own efforts.
Good luck with your PPL and all future plans.
