B. W. Johnson's The People's New Testament: Introduction to Revelation 
An introduction to the book, its date and author, its interpretation, symbols, divisions, and scope. (From 1891)
http://www.mun.ca/rels/restmov/texts/bjohnson/hg1/PNT27-00.HTMRevelation
Links to study guides, notes, outlines, and articles about the book. Includes links to book reviews of books about Revelation.
http://www.textweek.com/epistlesrevelation/revelati.htm
Prophecy Central: Revelation Notes
Offers an overview of the Book of Revelation in outline format.
http://www.bible-prophecy.com/revelationnotes0.htm
Book of Revelation Audio Study
26 lessons through the Book of Revelation in MP3 format. Premillennial viewpoint.
http://www.bookofrevelation.net/
Prophecies of Revelation
Offers readings and comments on the Book of Revelation, in streaming audio.
http://www.4thewordofgod.com/
Jonathan's Bible Study: Revelation
Interprets the book's message as one of hope and reassurance to its time, not as a series of predictions.
http://www.jmbiblestudy.com/rev.html
Revelation: Transition to a New Era
Brief study notes on key topics.
http://www.bible-study.cocareers.com/revelation/toc.htm
Revelation Summary
Short reference to the Book of Revelation with a few illustrations.
http://www.goldnuggetwebs.com/revelation/
Studies in the Bible: Revelation
Presented in two parts: The Seven Churches of the Apocalypse, and then, An Interpretation of the Apocalypse Chapters 6-22, which is intended to build upon the exposition of Albert Barnes.
http://members.fortunecity.com/truereligion2000/
Revelation Explained
Ongoing study through the Book of Revelation
http://revelation101.blogspot.com/
Introducing Revelation
An introduction to the book of Revelation and study questions for each chapter drawn from the NIV Quiet Time Bible. From InterVarsity Press.
http://www.ivpress.com/bible/rev/
Thoughts on Revelation and Daniel
An illustrated historicist study of Revelation, Daniel, and end times by Pastor Graeme Hotter.
http://www.revelation-illustrated.com/
Blessed Hope Ministries: Studies in Revelation
Survey of the Apocalypse in 34 lessons.
http://bhmtx.org/revelation.aspx
Flowchart for the Book of Revelation
A chapter-by-chapter study of the book of Revelation with an emphasis on literary structure and themes.
http://revelationflowchart.home.comcast.net/
Revelation 101
Challenges the authenticity and canonicity of the Book of Revelation.
http://www.revelation-101.org/
