Listen to Jeff's interview on the Refining and Reforming Podcast as he discusses The Absurdity of Unbelief: A Worldview Apologetic of the Christian Faith, his excellent new book on apologetics. I highly recommend the book as an outstanding example of presuppositional apologetics. Jeff ably demonstrates how all other worldviews but the Christian worldview are internally inconsistent and ultimately end in absurdity.
In his interview on the R&R podcast, Jeff offers a good overview of what you can expect in more detail in the book. You may listen to the interview here. You may purchase the book here or here.