This resource provides basic information on five selected topics related to creating and implementing online educational programs. "Adult Learning" (John C. Reid) provides an overview of general learning theories and discusses the characteristics of adult learners, strategies for taking advantage of adults' traits and motivations in creating learning programs, features of ideal adult learning environments, and suggestions for future research. "Computer-Supported Cooperative Work (CSCW)" (Michael Weisberg) examines the attributes of cooperative work, factors that increase team effectiveness, the integration of communication and computer technologies to achieve organizational goals, and computer-mediated communication and "groupware" programs. "Cooperative Learning and Distance Education Online" (Craig Locatis) describes cooperative learning's characteristics, methods, and benefits; examines research that supports cooperative learning; and discusses theories that explain its effectiveness. "Problem-Based Learning (PBL) in the Health Sciences" (Eldon J. Ullmer) analyzes this approach that has a long history in medical education and is staunchly defended by its proponents. A problem-based model is explained, and research on PBL is examined. "Technology Adoption and Diffusion" (Victor Carr) elaborates alternative views and theories of adoption/diffusion, differentiates several categories of technology adopters, and outlines strategies for affecting technology diffusion. (Each article contains 15 or more references.) (YLB)