The Revelation is to be sent to the seven churches that are in Asia. The author is John. Most scholars believe this is John, the Beloved Disciple. This is based upon writing style similarities in the Gospel of John, his three letters, and this Revelation.
The focus of this salutation is Jesus Christ. To Jesus be glory and dominion forever. He loves us, and has freed us from our sins by His Blood, and has made us priests to serve His God and Father. Behold, He is coming again, and 0EVERY EYE will see Him!