Seeking University Jobs in Mathematics?

NegativeK asks: "I'm currently a high school student, soaking up all of the math I can. Via a state program, the education department pays for my enrollment in a semi-local university, which is allowing me to take four mathematics courses at a time. My question is this: am I chasing a white-elephant? How much does it take to get a job in theoretical mathematics? What does it require to get a stable job in a university to do math research? This also applies to other theoretical positions; how competitive is the workplace in a research university?"