What is the central idea of this passage?

there are differences between going to classes to become a pilot and going to school to become a flight instructor.

flying all over the united states is a typical, but ambitious, goal for a privately licensed pilot.

people who are passionate about flying should get their pilot’s license, but they should get the proper training.

people who come from a family of pilots have an advantage when they learn to fly planes and teach other pilots to fly.