Accessibility
Building sites everyone can use.
Accessibility is taught here in 3 lessons, running from WCAG in plain language through to Focus management, ARIA and testing. Each lesson takes one topic, shows the working code, and links onward to the next, so the course can be read straight through in order.
| Track | Building a Website |
| Lessons | 3 |
| Level | Beginner |
| Reading time | about 39 minutes |
| Prerequisites | Helpful, but not required: CDNs & Caching |
Lessons
- WCAG in plain languageThe four principles behind the guidelines, what the conformance levels mean, and the failures that account for most real-world barriers.
- Semantic HTML and keyboard accessWhy the right element is most of accessibility, how tab order really works, and the fixes that come free with native controls.
- Focus management, ARIA and testingMoving focus deliberately in dynamic interfaces, using ARIA only when needed, and a testing routine that finds real barriers.
More in Building a Website
SEO Basics Domains & DNS Web Hosting CDNs & Caching
FAQ
How long does the Accessibility course take?
It has 3 lessons, about 39 minutes of reading. Expect roughly twice that if you type out and run every example.
Do I need prior experience for Accessibility?
Not strictly. It helps to have read CDNs & Caching first, because some lessons build on it, but every lesson explains its own assumptions.
What should I read after Accessibility?
This is the last course in Building a Website right now. Browse the other tracks from the courses index to go sideways.
Last refreshed 2026-09-18.