The book of Acts was believed to be written by Luke. Do you want to know some interesting facts about him?
He most likely was a Gentile
He was an inspired man of God
He was well educated
He was a physician
He was call beloved
He was a man of culture
He was Paul's traveling companion
He was a master of the Greek language
He was a sacred historian
He wrote 30% of the New Testament
The book of Acts is the 3rd largest book in the New Testament (First being the Gospel of Luke Second being the Gospel of Matthew.) Acts is the continuation of the Gospel of Luke as spoken about in Acts 1:1. Luke tells the story of how Jesus' followers were empowered and guided by the Holy Spirit to take Jesus' message of salvation from Jerusalem to the ends of the earth.
Luke wrote the book to Theolophus (which means one who loves God.) He may have been a patron who supported Luke, or maybe a Roman official. We do know he was a Christian, possibly a new convert.
The book of Acts connects the Gospels to the early church throughout the Roman Empire.