Sorry for the delayed reply. I've never seriously considered becoming an entrepreneur, so your post is very useful and may even significantly change the rest of my life. I need to do a lot more research about all this. Those links are also really helpful; Paul Graham's essay makes lots of sense.

My plan at the moment is to settle on some vague life plan. I'm not nearly competent enough yet to go off and start a business or get a job, so I think my plan at the moment, if said "vague life plan" is to become an entrepreneur, is to finish high school and then go to some university. While I'm doing that I'll be learning more about entrepreneurship and other useful skills, then decide where to go from there.