Jesus proclaimed good news.
He told people that God had done something for them they could not do for themselves, that through Jesus he had made right their relationship with him.
Jesus also served people. Although God in human flesh, he did not come to be served, but to serve. He listened, healed, encouraged, taught, and loved those he encountered.
That's it. Not a long list, but a life worth living. When you follow Jesus you'll find yourself giving good news to others you are serving and helping. Just keep following him.
Jesus traveled throughout Galilee teaching in the synagogues, preaching everywhere the Good News about the Kingdom. And he healed people who had every kind of sickness and disease (Matthew 4:24 NLT)