The following Web sites are general hobbyist or user group sites with good information about Wi-Fi:
The homepage of the Bay Area (San Francisco) wireless users group
The homepage of the Dallas/Ft. Worth wireless users group
The homepage of Dr. Trevor Marshall, this is a great site with information about Wi- Fi security, and antenna designs. A good place to start if you want to try building your own antenna.
This is a good site with plans for a 2.4 GHz helical antenna, an excellent place to visit if you want to try building your own helical antenna.
The homepage of the New York City wireless users group
A great page with lots of good antenna ideas, an excellent starting place if you’re interested in building an antenna
The homepage of the San Diego wireless users group
A Seattle WUG with the goal of creating a free wireless community network
The homepage of the Southern California wireless users group (Los Angeles area)
A good wireless portal with links to several wireless user groups