Traditionally you get a bachelor's degree in nursing, pass the boards to become a registered nurse, practice for 2+ years then return to school to get a master's or doctoral degree in nursing to become a nurse practitioner.
Some will start out as nursing assistants, then become RNs with an associate's degree then go on to get their bachelor's degree and follow the path above.
Others will get a bachelor's degree in another field then return to school in an accelerated nursing program. They will fake and pass their nursing boards and become RNs, Many will then enter directly into a master's program or doctoral program to become a nurse practitioner.
Once you finish your graduate education you will have to take another board examination to be come certified as a nurse practitioner. Then you will get licensed in the state you want to practice in as an APRN (Advanced Practice Registered Nurse) which is the official designation for nurse practitioners.