A few weeks ago I finished Paul Copan’s book “How Do You Know You’re Not Wrong?”: Responding to Objections that Leave Christians Speechless. This is a very good lay-level approach to dealing with common challenges to the Christian worldview. He presents solid arguments against skepticism, pragmatism, naturalism (arguing that immaterial realities exist), scientism/empiricism (beliefs must be backed up by science), and reductive materialism of the mind (with a whole chapter on the mind-brain interaction problem).
Copan also tackles a subject most apologists never touch on: animals and the charge of speciesism. He addresses the Biblical view of animals, our responsibility to care for them, and yet concludes that ultimately the animal rights/liberation movement is wrong.