Books

Dan Lucarini's Book, "Why I Left the Contemporary Christian Music Movement" is a great eye opener.
It can be obtained at: Amazon.com

Presentations

Brian Neumann has one of the most informative presentations on music that we have heard. You can hear his presentation on this website or order his and many other great educational materials at the following site.
amazingdiscoveries.org

Also check out his book called "From Rock 'n' Roll to Rock of Ages" by Brian S. Neumann.