I used to recommend The Case for Christ by Lee Strobel to my friends, even before the Bible, because of my belief that the resurrection is the primary hang-up they have to get through before considering the Bible shouldn't be treated like Aesop's Fables. But, I've had a couple of friends who have found it difficult to get through. So, I think I might have skipped a step again. Now, I'm recommending either Reason for God by Timothy Keller or Mere Christianity by C.S. Lewis. Both of these start with the idea of God in the first place. Why we have it and if we need it? Lewis in particular uses compelling logic, wonderful for you philosophical-minded readers. Keller's book is a little bit easier to digest, and goes step by step through typical objections to reasonable faith. Here's my suggestion. Go to your local library and see which one you might like. Read the first few chapters of one of them. If you don't like it, try the first few chapters of the other. If you still don't like it, give up. I'm ok with that. But, you've got to try. It's too important not to have an opinion on.