I've been wondering why Peter all but vanished from scripture after the Resurrection. He was told many times by Yeshua to feed his sheep. But he went to Rome and sent out only one letter that we're sure was from him.
Did he feed Yeshua's sheep?
Why did Paul take over that role?
The first half of the book of the Acts of the Apostles pretty much focuses on Peter and crew.
In the telling, Peter and John heal a lame man, and Peter preaches an early message of the gospel to a gathering of Jews in Jerusalem, converting 3,000 in a day. Later, Peter is freed from prison bonds by an angel, and he is led to travel and preach the gospel message to the Gentile Cornelius and his family, and sees the confirmation of the Holy Spirit upon his work.
Peter is also the christian leader who called out the duplicity of Ananais and Sapphira, ... and later raised the good christian woman Tabitha (Dorcas) back to life.
He continued to be highly involved with the church at Jerusalem, along with James and John.
The latter half of the book of Acts features Paul.
Peter and Paul are, typically, seen as the dynamic duo of the gospel (though that is a bit simplistic), ... with Peter mainly ministering to the Jews ... and Paul mainly ministering to the Gentiles.