9Marks Ministries has a great grouping of articles about the Emerging Church, its influences, and practices.
I highly recommend the following:
THE EMERGING CHURCH
An Emerging Church Primer
by Justin Taylor
Pastor's and Theologian's Forum on the Emerging Church
The Emerging Consequences of Whose Ideas?
Book Reviews: The Radical Reformission & Confessions of a Reformission Rev
by Mark Driscoll
Reviewed by Mike McKinley
Book Review: Velvet Elvis: Repainting the Christian Faith
by Rob Bell
Reviewed by Greg Gilbert