Canonical Orthodox Church List - A list of real Orthodox Church member bodies. lf a church's affiliation isn't on this list, it's not part of the mutually recognizing, world-wide, communion of the historic Orthodox Christian Church.
Orthodoxy in Indonesia - Not quite an "official Church site," but a good place to go for information on the origins and status of the Church in the world's most populous Muslim country.
Liturgica.com - good resource on worship in the Temple, ancient Synagogues, and from early Christian to Protestant worship, with samples of worship music. Books and music available.
Fr. Alexander Schmemann - writings, sermons, video interview, and photos of this noted theologian.
Caveat lector: As with the Internet in general, expect a great variety in the quality and legitimacy (canonical or ecclesiastical) of Internet sites found through any sources other than canonical Church's official sites. Though some sites may be perfectly helpful, other sites on the Internet may reflect a strong bias or agenda that is presented as valid and necessary to Orthodoxy while it may be something entirely else.