Practical Lessons is the result of the National Symposium on Homelessness Research: What Works? This symposium was held on October 29-30, 1998 and was sponsored by the U.S. Department of Housing and Urban Development and the U.S. Department of Health and Human Services. The goal of this meeting was to examine the current state and future direction of research and evaluation. In addition, assistance was provided to policymakers and service providers in the development, implementation, and monitoring of housing and services that can more effectively serve the homeless population. Practical Lessons includes the revised editions of thirteen papers presented at the meeting by nationally recognized faculty. The topics addressed include prevention, special populations, clinical interventions, systems integration, case management, transitional services, permanent housing and employment, and consumer involvement. AVAILABLE FROM: National Resource Center on Homelessness and Mental Illness, 262 Delaware Ave., Delmar, NY 12054, (800) 444-7415; HUD USER, P.O. Box 6091, Rockville, MD 20849, 1-800-245-2691 [abstract]