Also see the St. Sophia Calendar and more events and links

Events
The Theophany of Our Lord, and see A Theophany Within by Fr. George Morelli

About Orthodoxy and General / Educational Resources
Services, Liturgical Instructions
Discovering Orthodox Christianity
St. Nicholas Cathedral Bookstore Icons
  (at one of the better parish websites I've seen so far)
Lives of the Saints shared by Teen Soyo members (nationally)
Orthodoxy Today, a web magazine

Schools and Seminaries
Antiochian House of Studies
St. Stephen's Course - a distance learning course for lay people or those preparing for the diaconate
St. Tikhon's Seminary
St. Vladimir's Seminary
St. Athanasius Academy of Orthodox Theology
  — Founded by Fr. Jack Sparks (Orthodox Study Bible Project Director)
Hellenic College and Holy Cross Seminary

Music
Sacred Music
Eikona - Try this Sample
  — and the Akathist and the Paraklesis Hymns at the Greek Orthodox Audio Files page
Learn Byzantine Chant brought to you by Holy Cross
  — a well done Flash presentation with many examples and exercises
Byzantine Chant at Liturgica.com
  — with several good samples... even in English!
Russian Chant at Liturgica.com
  — also with several good samples in English

Books and Bookstores
The Orthodox Study Bible, also see: OSB Press
St. Vladimir's Seminary Press
Antiochian Village — Camp Bookstore
  — I don't know if you can order online... You may just have to go there!
Conciliar Press
Archangels Bookstore

Videos
Остров (Ostrov - The Island)