This and Lee Strobel's Book were important as I looked to converted celebrity atheists, cynics and what compels their commitment and belief. C.S. Lewis was another convert from atheism.

ANYthing by Tim Keller is great. Personal favorites? Counterfeit Gods, The Prodigal God, Christ the King, Forgiveness...

She has another book, "Praying the Names of Jesus" that is really good, too. Our God of many names.