This is an excellent presentation by Dr. Jason Lisle, where he provides evidence for a Creator, but also teaches how to practice a method of apologetic debate he calls "don't answer, answer." I found this lecture to be very enlightening and encouraging, and I hope you will, as well.
In this companion DVD to his book by the same name, Dr. Lisle presents an ultimate proof for the existence of God and the truth of creation. He goes beyond the battle over “evidence,” and demonstrates why and how we are to defend the faith. Dr. Lisle shows why secular worldviews cannot stand up to logical scrutiny, and how only the Christian worldview can account for the world we live in.