This book, which is designed for trainers responsible for training other trainers, outlines and illustrates the principles of a program in which trainers are prepared to promote adult learning and change. Part 1: "Training That Respects the Learner," presents insights from popular education and a model for training trainers in the popular education approach. Part 2: "Lessons Learned from Practice," presents selected lessons learned from practice (the effect of group size and the role of the "professor," the importance of dialogue, honoring the role of the learner, transforming the culture of teaching, and making time for training) within a variety of training contexts, including programs training trainers in community health, paid and volunteer workers in nonprofit organizations, health professionals, literacy trainers, professionals working with substance abuse programs, and trainers working with a community development bank. Part 3: "Applying the Approach," focuses on application of the approach and considers the challenge of design, strategies for supporting newly trained trainers by continuing dialogue; and program evaluation. Case studies drawn from diverse settings, including Chile, rural Arkansas, rural Vermont, New York State, and Haiti, are included. Contains 34 references. (MN)