I highly recommend William Kirkpatrick's Christianity, Islam and Atheism by Ignatius Press. If you are asleep, it will wake you up and if you are awake, you will be consoled by your insights and knowledge as being placed in the correct peg holes.
I do not think I need to comment on the book, as it is better for one to sit down and read it slowly. It is not difficult to understand-an "easy read".