In order to begin flight training in the United States, you first need to obtain a student pilot certificate and a medical certificate. The reason for obtaining a student pilot certificate should be obvious; you need one before you can fly solo, although you can take flying lessons without one. On the other hand, getting a medical certificate isn't as obvious, and it can sometimes take people by surprise if they think they only need a pilot's license. A medical certificate will alert you to any medical condition that could prevent you from becoming a pilot; so obtaining one is a must before you begin your flight training.
