This manual, the Spanish translation of a separately available English handbook on program design, is intended to assist volunteers and staff of volunteer organizations in the systematic design of projects in various health, community, and social service areas. The first section of the manual is a guidebook that addresses such aspects of the planning, implementation, and evaluation process as situational analysis, needs assessment, task-oriented planning, progress and product evaluation, problem solving, and follow-up. Addressed in a chapter dealing with methods are the following topics: information gathering methods (library search, field surveys, consulting experts, task forces, and technical conferences); planning and implementation methods (community organization, group discussion, bargaining and negotiation, model behavior, nonformal education, technical assistance, and cost analysis); and evaluation methods (feedback, practical tests, and presentation of data and information). Concluding the guide are a series of how-to-do-it manuals devoted to health and primary care, water and sanitation, nutrition and food production, education, economic development, community services, and energy and conservation. (MN)