First off don't let anyone tell you you are too young to start a business, but you will need a lot of help! If you are good with computers you could start up a small internet business. The problem is you will not be able to compete with big shops that sell at major discounts! They will be selling for cheaper than you can even purchase. Why should someone buy from you instead of a larger company that can back their product? There are a lot of costs involved with an internet business that people don't realize, web hosting fees, secure server, fees to accept credit cards, and the list goes on. I think one of the best ways to start would be ebay (but you may have to be 18, I'm not sure). Just my opinion, I'm sure I'll get slashed by someone.
Oh yeah, like dherbman said..."Finish HS!"
Also take some business classes at the local community college.
One last piece of advice from personal experience Do not go into debt before you're stable enough to handle it, this means do not get a credit card if you don't have a job!
It may be tempting to charge up a bunch of equipment for resell, but you will have to pay it back whether you sell you products or not.
If you want to be in the dive industry take as many classes as you can, there's always something to learn with SCUBA.
Life should be a learning experience, try to learn as much as you can about everything you can and keep going to school (High School, college, more college, etc.)
