This video was created by the Digital Accessibility Program at UC Berkeley. It provides an introduction to designing for keyboard accessibility and covers tab order, focus indicators, and keyboard traps.
Links in slide presentation:
Mac users: How to enable keyboard navigation:
https://www.a11yproject.com/posts/macos-browser-keyboard-navigation
WAVE:
https://wave.webaim.org/extension
Taba11y:
https://chrome.google.com/webstore/detail/taba11y/aocppmckdocdjkphmofnklcjhdidgmga
Accessibility Insights:
https://accessibilityinsights.io/downloads
DAP site: Keyboard-only access:
https://dap.berkeley.edu/learn/concepts/keyboard-only-access
WebAIM: Keyboard Accessibility:
https://webaim.org/techniques/keyboard
(W3C) Understanding SC 2.1.1: Keyboard:
https://www.w3.org/WAI/WCAG21/Understanding/keyboard.html