Here is a list of some books that you may find helpful. They are categorized into three different levels to help you gauge which books might be right for you:
- B = Beginner level books are good to get you introduced to apologetics. They provide the basic arguments for Christianity in easy to understand language.
- I = Intermediate level books delve into the issues in more detail. These are typically at a college undergraduate level.
- A = Advanced level books are more scholarly and go deep into the issues utilizing sophisticated academic principles and methodologies.
I Don't Have Enough Faith to Be an Atheist - Norman Geisler, Frank Turek (B)
On Guard - William Lane Craig (B)
The Case for the Resurrection of Jesus - Gary Habermas, Michael Licona (B)
The New Evidence That Demands a Verdict - Josh McDowell (B)
Is God a Moral Monster? - Paul Copan (B)
Reasonable Faith - William Lane Craig (I)
Philosophical Foundations for a Christian Worldview - William Lane Craig (I)
To Everyone an Answer: A Case for the Christian Worldview (I)
Contending With Christianity's Critics (I)
God Is Great, God Is Good (I)
Fabricating Jesus - Craig Evans (I)
The Blackwell Companion to Natural Theology (A)
In addition, William Lane Craig has a website called Reasonable Faith - it has scores of articles, questions and answers, podcasts, and debates all free and online. This website is invaluable to anyone studying Christian apologetics.