The purpose of this manual is to provide a guide to the inservice training of librarians for community liaison through the group work process. The manual was developed for the supervisor participants in the Institute on Discovery Management for Supervisors of Library Branches Serving the Underprivileged and Emerging Communities and is a companion volume to the institute papers, "Communications Management of Human Resources" (Bookstore, University of Pittsburgh, 1971). The aim is to provide a training manual which will lead to competence in group discussion methods and to an understanding of the major problems associated with group activity and community development work. The sessions have been designed to help a group acquire: increased sensitivity to the major factors involved in the discussion process; understand the importance and value of group discussion methods; develop skill in diagnosing the problems which a group leader may handle; acquire experience in leading discussion, in order to build leadership skills; and understand the role of skillful interpersonal relations as a technique for bridging the gap between the "passivity" of discussion and the activism of community involvement. This manual includes a number of separate topics which could be covered in a short training program. (Author)