Paul is near the end of his second missionary journey and saying "goodbye" to many he brought to the faith but will likely never see again. Lots of tears and final instructions by Paul on what it is to be a servant to the flock. "It is more blessed to give than to receive." Not talking about money, by the way.
Paul continues on his missionary journey and is Ephesus where God continues to perform many signs and wonders and the religious people continue to resist. However, for those who believe, their lives are transformed!
In Acts 18, we meet all kinds of people from different backgrounds who all work together and get along as one, with one intention - to share the gospel of Christ.
Paul continues his missionary journey in Greece and teaches them about the "Unknown God" and that God is not very far from us.
The early church fights against religion, culture and old practices that have nothing to do with the work God is doing. Some wanted to take the joy and grace they had been given and replace them with yokes of bondage.
Paul and Barnabas continue their first missionary journey through what is today Turkey. Persecution doesn't deter them and the gospel is shared with those who never knew the Living God.
Paul and Barnabas are sent out by the Holy Spirit on their first missionary journey. Now the gospel is really going to anyone and everyone who believes and receives.
Acts 12 is about the early persecution of the early church, God's signs and wonders, judgement on the evil and most importantly; how the word of God increased and multiplied.
The book of Acts, chapter 11 talks about the spread of the gospel and the grace that God showed to the amazement of the early church.