Other churches' sites: The church of Christ in Zion, Illinois: LOTS of really good information -- studies, books, sermons. Four men from around the country work on this site. Saline church of Christ: In Michigan. A good friend of the Kingston congregation; very informative website.
Christian articles: Christian Courier: Some intelligent articles on God's word. The Preacher's Files: More articles about the Word with plenty of great sermons. Apologetics Press: These articles tend to be more scientific in nature. ("Apologetics" has to do with defending the faith, not a weak "apology" for it.)
Useful tools: StudyLight.org: A comprehensive site with many tools for studying God's word. The Bible in many different translations; dictionaries, commentaries, and articles, too. E-Sword: Downloadable Bibles, commentaries, and dictionaries, for your PC (not Mac, apparently) or even your PDA. Thebible.net: Great site to learn about God with articles and various study guides to help further your knowledge. Audio files available also. netbiblestudy.net: Site which focuses on the issue of personal salvation - "Are You Really Sure Of Your Eternal Salvation?" www.searchtv.org: This site, "In Search of the Lord's Way", contains lots of informative topics and teaching by a brother in Christ - Mack Lyon www.aogden.com/mckee/ : Bible Study site with downloadable study sheets - Home of Bible Resources by Aude and Verna McKee!