Good Stuff on the Web:
EFCA (Evangelical Free Church of America)
The Gospel Coalition (articles, blogs, audio, other resources)
Spurgeon.org (digital library, sermons, articles)
RayStedman.org (sermons, writings, daily devotionals)
Desiring God (resources from John Piper)
AlbertMohler.com (a Christian analysis of critical issues)
The Jonathan Edwards Center at Yale University (writings of and about Jonathan Edwards)
CCEL (Christian Classics Ethereal Library)
DTS (Dallas Theological Seminary)
Bible Study:
Blue Letter Bible (great Bible study tools)
SonicLight.com (teaching ministry of Dr. Thomas Constable)
Fighter Verses (fight the good fight through memorizing God's Word)
Children & Family
kidsministry.lifeway.com (digital resources and more)
truth78.org (vision-oriented ministry for the next generations)
Students
New City Catechism (learning the core doctrines of the Christian faith)