The study of nursing focuses on prevention of illnesses and injuries, care of patients of all ages and the promotion of health. This subject is useful for anyone who wishes to be a nurse at hospitals, clinics, assisted living centers or other health institutions.

The PhD is a doctoral degree, specifically called a "doctor of philosophy" degree. This is misleading because PhD holders are not necessarily philosophers (unless they earned their degree in philosophy!). That said, PhD recipients are able to engage in thought experiments, reason about problems, and solve problems in sophisticated ways.

Part-time learning allows one to obtain a degree or qualification even if one cannot attend school on a full-time basis. One can learn at one's own pace, gradually accumulating credits that count towards a final qualification.