The second thing the disciples focused on was spending time with their new family. The term the Bible uses is "fellowship."
Fellowship was more than just hanging out, watching TV and eating pizza. There was a sharing and a participation in each other's lives. It does not preclude hanging out, watc hing TV or eating pizza. It just includes much more. It is the definition of living in God's family.
It almost takes the rest of the New Testament to fully define what this type of family life means.
It is a life of mutual love, service ad giving. It is a life of building, encouraging and seeing potential in people. It lives outside of the normal cultural, but also becomes the ideals of that culture. It means working God's mission together.
It was the radical nature of their life together that affected their neighbors, and their cities. It is this living in God's family, as God's family, that can show what it means to be a Jesus follower.