Alternately press the left and right arrow keys to build up your speed (you must be in the red zone in the upper left gauge before you jump off the cliff); your up and down arrows to control your hangglider thereafter. Steer through the hoops to get points and avoid the cruel cruel eagles vultures, who will send you screaming in a death spiral to the canyon floor. Oh, and when the flashing downward arrow appears at the end of the level, it's a strong suggestion that you land your craft. (Press the spacebar while only a few feet above the ground.)
Or smash into a cliff. Your call.
Warning: Sound effects. Also, you might want to stick with the novice version. The expert level is for some reason set in the dead of night, which is a bit challenging, to say the least.