Once you have decided that it is in your best interest to learn how to start and run a business, you have to think about the type of business you would like to start. My advice to you is to start with your hobbies and other things you like doing. From my experience, if young entrepreneurs are interested in their businesses, they will work harder at making them successful.

Teenvestors are better at offering products or services for which they have a great deal of passion. Consider how 16-year-old David Hall of Denver, Colorado, turned his love of cars into a business. David started his own car detailing business as a way of staying in touch with fine automobiles. He specialized in thoroughly cleaning the exteriors and interiors (including underneath the hood) of foreign luxury cars such as Mercedes Benzes, BMWs, and Jaguars. For each car he makes immaculate, Dave pockets $50. Dave says of his business:

Ever since I can remember, I have always liked cars. Two years ago, I decided to start my own car detailing business. I work hard at my business, but I also enjoy it because I work with some high-powered cars and sometimes even antiques. Getting paid for doing what I like makes it easier for me to do my job. The money is great, too.
— David Hall, 16

Several years ago, 16-year-old Christian Sepe wrote this passage about his own business that grew out of a hobby for which he had a great deal of passion:

I created my own business from a hobby that I had. I was very interested in stereos and music and therefore decided to start my own disc jockey service. My parents in no way dictated how I was to go about this. My father was always willing to offer his time and give me suggestions, but he always left the final decision up to me.

In the beginning, my business was cumbersome, but as time progressed I gained more skills and I became more efficient. After each job, I would analyze what had occurred and how I could go about improving on it. For instance, in the first job I did, it took me about an hour and a half to set up and another hour to break down. This was far from efficient, but as time progressed, I was able to cut this time to about twenty minutes for each step. I cut this time by experimenting. I experimented with different types of set–ups, and, yes, at times my trials failed, but eventually I succeeded in reducing the time. I have learned a lot about how certain things should be done through these failures and the experiences I have had has helped to strengthen my ability to make decisions.
— Christian Sepe, 16