The accounts in the book of acts are reliable as is the complete bible. A better date for the begining of paul's ministry is 37 a.d. Stephen is myrtered about 36 a.d. And paul's conversion is shortly after.
Peter
Like Jesus, Enoch and Elijah also ascended to heaven. Also, Like jesus, not of them have returned yet.
It is called the Ascension of Jesus. After his resurrection, Jesus was taken up to heaven in the presence of his disciples.
On the Feast of the Ascension customarily dated forty days after the resurrection.
Go forth and preach
Act 1:12 Then they returned to Jerusalem from the hill called the Mount of Olives, a Sabbath day's walk from the city.
Yes it was John. Because of the words of Jesus were not fully understood when he spoke with Peter. Which is often the case today when the words of Jesus are shared.
Andrew as an apostle of Jesus - his first apostle.
John was the apostle that Jesus loved.
No, John the Apostle was not directly related to Jesus.
He calls himself an apostle of Jesus Christ. Eph 1:1 From Paul, who by God's will is an apostle of Christ Jesus--- To God's people in Ephesus, who are faithful in their life in union with Christ Jesus:
His ascension into Heaven. This was 40 days after His resurrection from the dead.