The book of Daniel is about Israel in the time before Christ. The prophecy in Daniel begins with the Babylonian kingdom and continues through the Roman kingdom in such detail and accuracy that many believe it was written much later and is more historical than prophetic. It also tells us about the later kingdoms but in a much broader sense and less detail.
The book of Revelation, written by John on the island of Patmos, tells us about the kingdoms that come after the Roman kingdom. Revelation tells us in great detail about Christ's message to the seven churches and the seventieth week of Daniel's prophecy of seventy weeks of years. This includes the breaking of the seven seals, the blowing of the seven trumpets, and the pouring out of the seven bowl judgments. Lastly it tells us the good news about the return of Christ and the establishment of His kingdom.