Working as a receptionist in any other industry can get you in the door, but customer service positions also prove you're capable of dealing with the public -- as long as you have good references -- so retail or restaurant work is relevant experience for your resume.
Compression socks for runners are a super strong elastic sock, typically worn up to the knee. They compress veins on the surface of your leg, as well as arteries and muscles, so that blood is circulated through your legs through smaller circulatory channels.
Suit up in a long-sleeve compression shirt and compression pants; they'll wick away sweat, dry quickly, and keep your muscles warm but your body cool. Receiver gloves, like the kind football players wear, will give you added grip for climbing obstacles. On your feet, wear moisture-wicking socks and lightweight trail-running shoes. And don't bother with designer duds.