Here are a few of my favorite sites for resources on Orthodox Christianity:

• Ancient Faith Radio - A pan-Orthodox internet based radio station on the air 24 hours a day.
• CopticChurch.Net - Daily lectionary, articles, hymns, and sermons.
• OrthodoxWiki - A free-content encyclopedia and information center for Orthodox Christianity.
• OrthodoxBookstore.org - Offers a vast selection of Coptic and general Orthodox books.
• OrthodoxSearch - Indexes hundreds of well-known and obscure websites from around the world relevant to Orthodox Christianity.
• OrthodoxSermons.org - Compiling the largest collections of Orthodox Sermons on the web.
• SUSCopts.org - Contains a resources section plus Q&A with the Bishop.

Please fell free to comment with your favorite resources.

Disclaimer: I provide technical support for both OrthodoxBookstore.org and OrthodoxSermons.org.