Like the other study guides for N. T. Wright's New Testament for Everyone commentaries, this one was very helpful for me in preparing a Bible study with other people from our church. It's not a standalone book--at least the leader of a group will also need the related book by Wright (in this case, Paul for Everyone: The Prison Letters, which includes commentary on Ephesians, Philippians, Colossians, and Philemon). Some of the suggested questions seemed a little to obvious or basic for our group, but it's easy enough to modify those or skip them. Each of the 11 studies in this book led to at least an hour of good discussion.