When Jesus found people who were open to His message He would eventually share the message with others in their relational network (Family, Friends, Co-workers, and acquaintances). Several times entire "households" would receive the good news. In the cases of the tax collectors (Matthew and Zaccheus) He went to their house to meet their "Oikos." In the cases of the woman at the well and the demoniac they went into the near by villages and told the people about Jesus and His message. This is how the gospel spreads virally.
Learning this lesson from Jesus, we will immediately teach the new follower of Jesus how to share their story and Jesus story and draw out their "Oikos Map." The map contains the names of people they know and whom they will go and share their story with. It also includes secondary relationships in which they can share with as well (or train to share with others).
They begin by drawing a bubble in the middle and putting their name in it. Then they draw connected bubbles around theirs. They should try to map as many people as they can.
Then they draw the secondary relationships and connect them to the people they know. And finally, have them draw an empty bubble at the end of every stream of relationships to encourage continued prayer and sharing through the "generations."
Have them set a goal to share with 5 people in the next 7 days. Each week they will update their map and choose 5 more people to share with.