The best thing you can do at your age is to invest in yourself. A good education or a good trade is the way to go. Be careful of anything that promises you to make you easily rich quickly. Because if it was this easy, most of us would be rich. (Personally I don't take any advice from someone who lives a very high end lifestyle. Most of them have done some illegal stuff to get there.)

I'm 51 and the most financially comfortable people I know are the ones with a diploma in a high demanding field or have a business. They are all also very frugal with their money.

So save your money for your education and don't buy stuff to impress others (especially at credit) and you will be better off than a lot of people.