If you have $4 to spend I would highly recommend purchasing this talk by Randy Harris on arguing for the empire of Jesus Christ. It is quality and something I think everyone should hear. This is from Gulfcoast Getaway 2010. It is Keynote Session 3. It will grow your faith and help you understand how to talk with atheists. This one is Randy Harris at his best.

Christianity
The Verse that Cured My Legalist Christian Beliefs
For many years, my in-ness or out-ness varied moment by moment…even second by second based on how well I performed