This guide provides step-by-step instructions on understanding, planning, and engaging in the coordination of community resources that support the transition of youth with disabilities into adult life. Designed for use at the federal, state, and local levels, this document provides numerous practical tools and resources for initiating a resource mapping process. This publication is organized around four distinct steps: Step 1: Pre-Mapping; Step 2: Mapping; Step 3: Taking Action; and Step 4: Maintaining, Sustaining, and Evaluating Mapping Efforts. A list of resources and a glossary are also included.