At Grace PCA we have been studying the book of Revelation. If you are interested in further study of the book of Revelation, here are some good resources:
In terms of books, I highly recommend Vern Poythress’s book, The Returning King: A Guide to the Book of Revelation. The book will not answer all your questions (it doesn't attempt to do so), but it will help you understand the big-picture issues of interpreting Revelation.
For general issues related to the study of eschatology (the study of last things), I recommend Anthony Hoekema’s book, The Bible and the Future. I do not agree with all of Hoekema’s interpretations (something that could and should be said of all book recommendations), but overall this is an excellent resource for the major themes in biblical eschatology.
There are some good online resources. Dr. Kim Riddlebarger has made his sermons on Revelation available in text format. You can read them here.
He has some excellent audio resources on eschatology. They are available here on the right side of his blog.
All of these resources are from a Reformed Amillennial point of view.