The commercial rating is just plain fun. It’s mostly “out the window” stick and rudder flying. It teaches you to take the airplane to the edges of its performance envelope.
You must have 250 hours total flight time of which 100 hours are PIC, and 50 hours of cross country flight.
Again, like the Private Pilot and the Instrument ratings, there is a written exam, flight training and a check ride.
Your plane or mine, your location or mine, it’s the same process.
You have questions? I have answers!