This is quite different from modern aircraft which use either elevators at the rear of aircraft horizontal stabilizer or all-moving stabilators to control pitch. From the glider flights of 1901, the Wright's identified the need for a rudder at the rear of the aircraft to control yaw and to allow co-ordinated turns. Roll control was provided by wing warping which is twisting the wing tips to increase or decrease lift on the outer sections of the wing. Changing the rear portion of a wing will change the amount of force that the wing produces. The ability to change forces gives us a means of controlling and maneuvering the airplane.
Modern aircraft use ailerons or spoilers to accomplish the same control.
The fuselage , or body of the airplane, holds all the pieces together. For the Wright brothers, this was a rather light, framed structure which did not require covering because of the low flight speed. The pilot of the Wright flyer would lie on the wing next to the engine.