This training guide provides Peace Corps volunteers (PCVs) with knowledge, tools, and techniques to work with a nongovernmental organization's (NGO's) staff, board of directors, clients, and donors to build its capacity. An introduction provides information on the trainer role, trainer's notes at the end of each module, and guidelines for placing PCVs with NGOs. Five modules follow. Module 1 looks at how NGOs contribute to a civil society and the PCV's role in working with an NGO. Module 2 discusses advantages of appreciative inquiry as an approach for NGO development. Module 3 presents the NGO Capacity Profile that diagnoses strengths and weaknesses and reviews functional components. Module 4 reviews these two skills a PCV needs to work with NGOs: facilitation and training. Module 5 explores the role of governance and planning in achieving a sustainable organization. Designed for the self-directed adult learner, modules allow flexibility in time spent and opportunities to explore areas that interest the PCV. Each module begins with knowledge, skills, and attitude objectives. Experiential activities are structured to encourage adapting what one knows and topics discussed to the local NGO situation; questions highlighting cross-cultural issues are incorporated. Key terms are defined and space is provided to write the local language translation. Trainer's Notes at the end of each module include overview of topics, time required, materials, preparation, and hints for debriefing the experience and processing the learning. (YLB)