Websites of interest

http://www.aavso.org/
American Association of Variable Star Observers

http://www.astroleague.org/
The Astronomical League, The World’s Largest federation of Amateur Astronomers

http://www.britastro.org/main/index.html
British Astronomical Association, the voice of amateur astronomy in the UK

http://www.astronomy.com
Astronomy magazine homepage

http://www.astronomynow.com/
Astronomy Now magazine homepage