What did Jesus father train him to be?

Answer 1

The answer depends a bit on your theological perspective of who was his father. For the purposes of this answer I will take the perspective that God the Father was his literal father and that Joseph was effectively his step-father.

His Father trained him to be the Messiah - the Savior all God's children upon condition of repentance.

His step-father, being a carpenter, would likely have trained him as a carpenter - although the scriptures are silent on the subject of Jesus' occupation prior to the start of his ministry at age 30. It was traditional and typical for fathers to train their sons in the same occupation that they had. Bakers trained their sons to be bakers, shepherds trained their sons to be shepherds, merchants trained their sons to be merchants, etc.