I am enjoying greatly Gary Burge’s, Interpreting the Gospel of John: A Practical Guide (Baker Academic, 2013). Burge has expanded this work significantly from the first edition. It is a good, stand alone introduction to the Fourth Gospel, being current with the vast majority of scholarship produced since Francis Moloney edited Raymond Brown’s introduction. However, the Moloney/Brown work is much more scholarly and thorough than Burge’s volume.
I also like J. Ramsey Michaels’, The Gospel of John (@Westminster) in the NICNT series (Eerdmans, 2010). Michaels’ volume replaces the earlier volume by Leon Morris which, too, is very good. Despite what I feel have been some unfair criticisms of Michaels’ volume, I like this commentary because of Michaels’ strong sense of how verses and pericopes fit into the overall message of John’s Gospel. Michaels understands that exegetical trees are part of a narrative forest with a meaning–a message; many commentaries only see individual trees. Michaels too has a very insightful grasp of John’s use of figurative language. I am trying to read about three pages per day; it is slow going, but a very good read. Michaels writes mainly for scholars, but has the preacher and congregational teacher on his scope too.