This resource introduces how disabled people use the web, including people with age-related impairments. It helps developers, designers, content creators, and others understand the reasons behind creating accessible digital products — including websites, apps, browsers, and other web tools.
I figured this might be worth sharing here. A practical guide from the Web Accessibility Initiative over at the W3C. A bit more friendly than technical standards like WCAG.
The Stories of Web Users section has lots of real-life examples and personal testimonials about how people struggle with day-to-day tasks.
I strongly recommend every person involved with the Web to go read that. It's pretty short and easily readable, but it's packed with real tips and stuff you might not have thought about.