Revelation is the last book in the Bible. It has two major parts. First, there are letters to seven churches in Asia Minor. Finally, there’s prophecy about the persecution of Christians and about the times leading up to the resurrection of the dead and judgement of all humanity.
First, what IS the rapture? It's generally taught be the event where Jesus comes to take His Bride - the church, which is all believers - to Heaven with Him. Some believe this will happen before the Great Tribulation, some believe it will be in the middle, and some at the end. All of these views consider the rapture to be a separate event from Jesus' second coming.