The Book of Acts is believed to have been written by the Apostle Luke.
It tells of the Church's early years, when the Apostles continued to preach Jesus' message. Acts covers the period between when Jesus was crucified to when Paul was imprisoned in Rome in AD60. There are many stories about Miracles in this book.
Acts provides us with the only history of the early Christian church written by a Christian. It also gives a good picture of what life was like in the ancient Roman empire.