My best advice for you here is to talk to your career counselor. Looking up things on websites just won't do you any good, unless you find a really good website like, let's say, bls.gov
if you wanted to learn about the earnings and a description of the job. However, for the requirements of the job and what classes you have to take beforehand, and all that other stuff, go talk to your career counselor. I don't think anyone here will be able to help you very much on this topic.