I am not 'bragging,' only mentioning these as recommended reading!
I picked up his book Following Jesus: Biblical Reflection on Discipleship (also, so far, very much worth your time).
Two semesters ago I took a class on the book of John that explored the complexities and uniqueness of the book compared to the other synoptic gospels. I think a lot of times (at least in my case) we are attracted to the book of John on a personal level because of these differences. Yet, on a scholarly level you cant help but be left confused at the complexities and uniqueness of the Gospel of John. Hence, why I love how N.T. Wright phrases his relationship with John:
"I said then, and its still true, that I feel about John like I feel about my wife; I love her very much but I wouldn't claim to understand her." -N.T. Wright