This report details the rationale, origins, and practice of peer counseling, a system of training people to help other people through empathy and decision-making. Specific applications are described, with particular attention to involving adolescents as peer counselors. The article illustrates the training model of peer counseling as developed by the Peer Counseling Project at the University of Victoria, including recruiting and selection of volunteers, the training process and training content, and the assignment of students as peer counselors. The use of the model with other groups is also discussed. The materials conclude with an exercise that may be used with adults to help identify peer-related decision-making processes. (Author/JAC)