http://www.ultralightflying.com/    Ultralight Magazine.

http://www.wisconsinppa.org/  Wisconsin Powered Parachute Association

http://www.powerchutes.com/  Powerchutes.com

http://www.ppcpilot.com/ PPC Pilot

http://www.nappf.com/index.html   North American Powered Parachute Federation

http://www.easyflight.com/  Easy Flight- PPC Training.