OT: Do you have any recommendations for elderly users? Any resources would be great, too. I've looked around but it's hard to find current, reliable information

OT: Do you have any recommendations for elderly users? Any resources would be great, too. I've looked around but it's hard to find current, reliable information on a somewhat unusual topic. The specs I find myself dealing with are the following, which I think are typical: * Very little knowledge of mobile computer conventions, or any computer conventions: Icon literacy, swiping, tapping, home screens, etc. Some don't understand what a web host is, or the difference between a browser's search field and its address bar. * Constrained physical abilities: Vision to see small print, dexterity to swipe correctly, etc. * Limited ability/motivation to learn more