I'll second that recommendation. IMO, there is no better apologetic written in clear terms for the Gospel of Christ.
Worth reading more than once.
Well, having only read Book I, I must say, I know I'm going to HAVE to read it again.....there's just so much in it and I have this funny feeling some of it is just escaping me......not that I'm dumb, of course, just that I know more will be understood the second go 'round.