What is a disciple? A disciple is someone who follows Jesus.
What does it mean to follow Jesus? To listen to what Jesus says and to do that. To emulate and copy the things that Jesus does.
What are the things Jesus says for us to do and what are the actions that we are to copy? To feed the hungry, to give drink to the thirsty, to clothe the naked, to welcome the stranger, to care for the sick, to visit those in prison, to love our enemies, to pray for those who persecute us, to show hospitality.