The first requirement in becoming a registered nurse is to obtain the proper education. There are several different paths that can lead to licensure as an RN. Aspiring RNs may earn a diploma, an Associate Degree in Nursing (ADN) or a Bachelor of Science in Nursing (BSN) .ou may hear of an RN to BSN program being called a BSN completion program. After obtaining the required education, you must pass a licensure exam before you can become a registered nurse. This is achieved by passing the National Council Licensure Examination (NCLEX-RN).