These links might be of interest:

General Aviation
If you want to learn more about the role of General Aviation in our society, this site covers it all in detail. Great information resource.

AOPA
Aircraft Owners and Pilots Association. This is the big General Aviation lobbying effort and all-around General Aviation pilot membership organization.

EAA
Experimental Aircraft Association - great for people that want to build their own airplanes

Weather
National Oceanic and Atmospheric Administration's National Weather Service Aviation Weather Center and Aviation Digital Data Service (ADDS)

FAA
Federal Aviation Administration information about how to become a pilot in the U.S.

Landings.com
A comprehensive aviation directory and information site.