This is a very strong "verse by verse" style of commentary that also does a good job with big narrative themes and interacting with other schools of interpretation (Johnson is amillenial). Johnson draws a lot from G.B. Caird's 1966 commentary The Revelation of St. John the Divine and even more from G.K. Beale's exhaustive 1998 work The Book of Revelation. As D.A. Carson notes on the jacket, Johnson "presents in a palatable, readable form." I found this book to be very applicable and helpful.

This is a good introductory commentary on the book of Revelation.