As an expert builder using the grace that God gave me, I laid the foundation, and someone else is building on it. But each person must be careful how he builds on it. According to the grace of God given to me, like a skilled master-builder I laid a foundation, but someone else builds on it.
The most-advanced helicopters can fly up to 300 miles before having to refuel. How long any particular helicopter can fly without refueling depends on the size, weight and age of the helicopter.
You will undergo flight and ground training at a local flight school, a flight physical, written tests, and practical tests. A private helicopter license takes 40 hours minimum flight time. If you are planning on completing the private only, you should expect to go beyond the minimum. Perhaps 60-80 hours is average.