This manual, designed for individuals, agencies, and organizations interested in preventing and intervening in youth violence, is a guide to guides, a map of resources on prevention and intervention. Development of the manual was guided by a number of prevention principles, chiefly, the belief that collaboration is essential for effective youth intervention. It is also recognized that efforts to reduce and eliminate violence should seek to boost protective factors that have been proven to foster resilience. Following an introduction outlining principles of prevention and intervention, Chapter 2 lists 20 resources related to collaboration and community development. Chapter 3 provides references to 14 organization directories and 7 databases that track and describe violence and prevention efforts. Chapter 4 itemizes 52 resources for program planning models, curricula, handbooks, and other reference materials. Forty organizations and vendors with multiple services and materials are listed in Chapter 5. Chapter 6 lists 24 sources for technical assistance, and Chapter 7 provides a master directory of all organizations and individuals referenced throughout the manual. Indexes are also provided by potential audience. (SLD)