The Urasenke Konnichian Web Site
Short biographies of the successive masters of the tea school established by the great 16th century tea master, Rikyu.
http://www.urasenke.or.jp/eframe.html

Ocha Sado Chanoyu
Explanation of the tea ceremony, with illustrations of typical utensils used to perform it.
http://home2.highway.ne.jp/hinachan/sadoo_e.html

Ogasawara Sencha Service School
Essay on the history and appreciation of tea by this school's headmaster.
http://www.jin.ne.jp/ogasawara/english/index.html

Teapot Salon
Types, preparation and serving instructions.
http://www.big.or.jp/~teapot/member/hamadaen/index-e.html

Urasenke Tradition of Tea
Gives introduction and history of tea ceremony, and lineage of the Urasenke family and organization.
http://www.urasenke.or.jp/texte/

Omotesenke Foundation of Florida
Intro to chanoyu covering history and philosophy, objects used in the ceremony, and a glossary of tea ceremony terminology.
http://omote-usa.org/

Nambu Ironware
Short history of metalwork in Nambu, where iron kettles for the tea ceremony are still made in the traditional way.
http://web-japan.org/atlas/crafts/cra01.html