Abstract: In this paper we revisit the major forms and structures that have been developed by educators and institutions to support both distance and campus based education. In addition to individual learning, some students, content and systems stress interaction specifically that between students and teachers, students and other students, and students and content. We then examine the ways in which education has been organized and specifically the types of social interactions and structures that support social learning. We look, in turn at groups, networks and sets and then demonstrate how collective resources and algorithms are creating new and very powerful ways to enhance the multiple forms of online learning.