There are requirements including (ground requirements, flight training requirements, flight training device time (optional), and flight test standard requirements).
There are 2 parts to learning to fly. The Ground class and Flight.
Ground requirements include those subjects that are required for the written exam. Ground School can be done in a group setting, one on one with a flight instructor, or online as a distance learning course. Each one-hour ground class requires 4 hours of preparation to be efficient and absorb the information.
Flight Training. This includes the actual flight exercise. It is one to one training. Each flight includes a preflight briefing, flight, and post-flight briefing. Each one hour flight required at least three hours preparation to digest and absorb the information and be ready for the next exercise.
You do not need to complete ground school before you start flight training. We suggest to do ground school and flying at the same time. What you learn in theory you can put to practical use in the airplane and the lesson will be better remembered. In bad weather, try to focus on the ground classes.
Flight is not an easy course, especially at the beginning and if you do not plan for it probably. It has a lot of information that necessitates a motivated and very clear mind person. The good news is that most of the information in the Private License course is repeated especially in the Commercial course, Instructor Rating course and instrument flight course. The private pilot course is the hub and the base of the other courses. That’s mean, the more effort and time you invest in the course the more time and money you will save in the other courses.