Various articles and audio pieces by Nancy Pearcey are available here. You can also hear her on WNYC's Brian Lehrer show discuss religion in the public square. I have yet to read the book, but it's received good reviews. You can get excerpts from the book and the entire study guide for free in pdf.
"A Christian worldview is not merely about ideas and arguments. It really begins with dying to the idols in our hearts...
Ask God to conduct a searching examination of your own hidden motivations, to reveal the idols in your heart and then set you free to serve Him alone."