I want to go back to school, and need good sites to reference to.?

I want to go to school but I don't know exactly what career path I want to take. So I'm looking for a couple sites. One with Jobs and job descriptions, also with needed majors. And Another for schools, possibly in my interests. I am looking to go into the Nutrition field of some sort. Dietician, nutritionist, homeopathic practioner, Sports medicine, Doctor. Not exactly sure.