Several years ago I had the opportunity to preach all the way through the entire book of Revelation. You can listen to all those sermons here.
I also got to write the study guide on Revelation for Crossway’s Knowing the Bible series, and you can see that study guide here.
More recently, I wrote an article for Crossway on why we should study the book of Revelation, and you can read that article here.
And if you want to read the book of Revelation itself (that’s by far the best thing to do!) you can read it here.