I recommend the book I Sold My Soul on eBay. The author, Hemant Mehta, is an atheist who is trying to help churches be better churches. I’ve reviewed it on my readings page. Here’s just one insight Hemant offers in the book:
"But as I read Christian books, and as I spent months attending an amazing variety of churches in different parts of the country, I kept running across a consistent and troubling truth about American Christianity. It is clear that most churches have aligned themselves against nonreligious people. By adopting this stance, Christians have turned off the people I would think they want to connect with."