This Guide is focused on the private insurance reforms of the Affordable Care Act (ACA), including the health insurance marketplaces, benefit and cost structures, and premium tax credits. It is organized into four sections that address how individuals may present themselves to Navigators based on their insurance status and coverage options. The questions and answers here have been developed in collaboration with the staff at the Center on Budget and Policy Priorities, the Georgetown University Center for Children and Families, and KFF. This guide is intended to supplement the Navigator training available from the U.S. Department of Health and Human Services. It is not intended to be a comprehensive, stand-alone resource for all the ACA reforms. While we have made every effort to provide accurate information in this resource guide, navigators should contact Healthcare.Gov or their state’s marketplace, Department of Insurance, or Medicaid agency for guidance on specific circumstances. This Guide does not provide legal advice. The information has been updated as of October 22, 2021.