This guide was developed to provide an overview of the major elements of the transition planning process from school to the adult system of supports and services for youth with developmental disabilities and their families. The workbook format is intended to enable families to be proactive at each stage of the planning process. Initial sections provide an introduction, an overview of the transition process, and a format for looking ahead. The next two sections focus on the specifics of program planning and case management (including information on the Individual Service Plan review meeting). The next three sections address issues of employment, residential options, and health care. These include decisions concerning employment possibilities, place of residence, development of independent living skills, recreation and leisure, relationships with friends and family, community participation, travel within the community, postsecondary job training, and needed supports. The final two sections offer suggestions to parents for estate planning and life planning for the affected son or daughter. Information about the PACER Center, a Minnesota nonprofit organization that serves families of children and adults with disabilities, completes the guide. (DB)