Discussions

Here are a few links for antenna theory and a link to Ham Radio Outlet where you can purchase ARRL Hand Books, you couldn't find a better resource than the Amatuer Radio Relay League books.

http://www.antenna-theory.com/basics/main.html
http://www.mobilemark.com/engineering/antenna-theory-simplified.html
http://k9erg.tripod.com/theory.htm
http://www.arrl.org/shop/Antennas/
http://www.hamradio.com/search.cfm search "handbook"

You can also find information regarding Amatuer Radio licensing on the ARRL site. Once you have a technician license you have access to frequencies others dont. An example of this 3.5 ghz where there is almost no activity, this means less interference and better signal quality. Oh, and there is no morse code to learn like I had to.