It was mostly on love and forgiveness, and repent of your sin. The disciples said more on Jesus Christ.
St. Matthew 4:17
From that time Jesus began to preach, and to say, Repent: for the kingdom of heaven is at hand.
Jesus preached the kingdom of heaven; how to get there, how to become one of its subjects, what it is like here in this world, the nature and character of its king, how its subjects should behave toward one another, how its subjects should behave toward non-subjects, benefits and duties of its subjects, etc.
everywhere
The holy spirit came on the desciples once christ was crucified. he was to comfort the 12 desciples.
Yes most of them were disciples were fishermen.
Jesus won't preach when he returns, but he will rule.
desciples
Jesus the Christ did not preach in Rome, but Paul the apostle went to Rome and preached about Jesus as did other men.
The 12 followers of Jesus were called the desciples.
LOVE
You can preach on Jesus in a church or at a prayer meeting. But you can not do it openly on the road.
yes
Most Christians believe that Jesus Christs role on earth was to preach repentance to preach forgiveness to preach salvation and to die for the sins of humanity and to rise in glory to eternal life.
Jesus first preaching was in the open, and not in a house.