When the people heard this, they were deeply troubled and said to Peter and the other apostles, "What shall we do, brothers?"
Peter said to them, "Each one of you must turn away from your sins and be baptized in the name of Jesus Christ, so that your sins will be forgiven; and you will receive God's gift, the Holy Spirit.
For God's promise was made to you and your children, and to all who are far away - all whom the Lord our God calls to himself."
Peter made his appeal to them and with many other words he urged them, saying, "Save yourselves from the punishment coming on this wicked people!"
Many of them believed his message and were baptized, and about three thousand people were added to the group that day.
They spent their time in learning from the apostles, taking part in the fellowship, and sharing in the fellowship meals and the prayers.
Many miracles and wonders were being done through the apostles, and everyone was filled with awe.
All the believers continued together in close fellowship and shared their belongings with one another. 1
References for Acts 2:44
2.44 Ac 4.32-35.
They would sell their property and possessions, and distribute the money among all, according to what each one needed.
Day after day they met as a group in the Temple, and they had their meals together in their homes, eating with glad and humble hearts,
praising God, and enjoying the good will of all the people. And every day the Lord added to their group those who were being saved.