A site called Goldfish Basics. Gives good basic infomation on Goldfish.
Goldfish Information and Ideas. Another site with good basic information and ideas about goldfish.
Fish Fair Library Has lots of links to helpful information about fish.
I love goldfish. A site by a goldfish enthusiast.
Goldfish Sanctuary A site for the ethical treatment of goldfish.
Aquarium.net. An online magazine about fish.
rec.aquaria.freshwater.goldfish is an excellent newsgroup about goldfish.
Aquarium is a good listserv about fish.
To subscribe send an e-mail message to email@example.com that reads
subscribe aquarium [your name]
Harris, Jack C. A Step-by-Step Book About Goldfish
Neptune City, N.J.: T.F.H. Publications, 1987.
Matsui, Yoshiichi, Goldfish Guide
Neptune City, N.J.: T.F.H. Publications, 1991.
"Take Your Goldfish to Work Day" New York Times 4/25/96 p. a25.
Tropical Fish Hobbyist is a good magazine to subscribe to.
Of course your local public library is an excellent source for information on Goldfish as well.