Nurses assess patient records, assist surgeons in operations, perform examinations and make diagnoses. They treat patients in transit to hospitals or at disaster sites. Nurses earn between $56,990 and $115,520 annually. To become a nurse requires completing a two-year Registered Nursing program at MiraCosta College, which involves 50 units of study. Applicants need a high school diploma and can obtain more information by attending an information session on November 30th or downloading the application online.