Learn Byzantine Chant
Byzantine Catholic Chant
Orthodox Byzantine Chant
History of Byzantine Chant
Byzantine Chant Resources
Byzantine Chant Study
Orthodox Church Music
Byzantine & Gregorian Chant Links
Byzantine Chant Info & Samples
New Byzantium Publications - Byzantine Music Instruction for Westerners. Also has midi downloads.
If you know of a good site that I don't have listed, email me.