Nursing is a field that is commonly in high demand in the health care sector and many persons have taken the step to becoming a Registered Nurse RN. A registered nurse is a health care professional who cares for patients on a routine basis and provides medical care for patients. In becoming a registered nurse one would pursue one of three degrees at different level one after the other: 1. Associate Degree in Nursing (ADN), 2. Bachelor of Science in Nursing (BSN programs) and 3. Entry-Level Master of Science in Nursing (ELMSN) program. Then one would go on to take the requisite test to obtain a RN license.