•   AARP. Political position papers, member discounts, demographic research,
     online versions of its bulletin, and magazine and consumer advice.
  •   Center for Medicare Advocacy. Detailed information about what Medicare
     covers, and how to enroll and, if necessary, appeal denial of claims.
  •   Medicare Rights Center. A similar tutorial on how this government health
     care program for the elderly works. A link to the Kaiser Family Foundation's
     "Medicare 101" and a hotline for questions and complaints.
  •   National Association of Area Agencies on Aging. Articles on caregiving,
     policy reports, and links.