A few of my favorite places...

General Centaur Links
Centaurs (What's a centaur?)
https://en.wikipedia.org/wiki/Centaur
Cheiron (Who was Cheiron/Chiron?)
https://en.wikipedia.org/wiki/Chiron

Favorite Web Comics
Accidental Centaurs by John Lotshaw
http://www.accidentalcentaurs.com/
Freefall by Mark Stanley
http://freefall.purrsia.com/
Sabrina-Online by Eric W. Schwartz
http://www.sabrina-online.com/

Publishing and Art
Smashwords (e-Publisher)
http://www.smashwords.com/
TV Tropes (What's a trope?)
http://tvtropes.org/pmwiki/pmwiki.php/Main/HomePage
Artists Beware (A community to warn of the good, bad and ugly of the commission world.)
http://artists-beware.livejournal.com/