In this video, I will give you an overview of the Garmin Navigational System 530, and will teach you how to input a flight plan and select another airport in the case of an emergency.
Reference #1 - http://forums.x-plane.org/index.php?/files/file/27585-xp_10_gps_530-unofficial-illustrated-quick_reference/
Reference #2 - http://www.aeroclub-hof.de/download/GNS530_PilotsGuide.pdf