Nursing is a career that offers a rich field of opportunities . Use this section as a resource / reference . There are many more specialties than what is included here , but we encourage you to check out the organizations listed with each specialty for in-depth descriptions and more information on certifications and advanced education opportunities . Note that for the specialty certifications listed , an unrestricted RN license is a pre-requisite for sitting for the exams . Follow the links for detailed information .