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WAVE browser plugin
Lighthouse - built into Chrome browser
Tutorial
I am not sure how useful LinkedIn learning is for this.
Basic
These tutorials have html examples.
'How to Use ARIA Effectively with HTML5,' https://www.sitepoint.com/how-to-use-aria-effectively-with-html5/
'Getting started with ARIA,' https://www.a11yproject.com/posts/2014-05-15-getting-started-aria/
'Background: An in-depth guide to ARIA roles,' https://www.a11yproject.com/posts/2020-08-20-an-indepth-guide-to-aria-roles/ .
These videos have html examples:
'Estelle Weyl – “Fast. Simple. Accessible.“ | .concat() 2018,'
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Kevin Powell’s playlist on 'Underutilized HTML elements,' https://www.youtube.com/playlist?list=PL4-IK0AVhVjOquwY5m3R3KFIEYW2sZEl5
Kevin Powell’s playlist on 'Accessibility,' https://www.youtube.com/playlist?list=PL4-IK0AVhVjMobWfe4VmvbAwLmpG1RQMT
'Introduction to WAI-ARIA (Accessible Rich Internet Applications),'
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.
Advanced
'WAI-ARIA basics,' https://developer.mozilla.org/en-US/docs/Learn/Accessibility/WAI-ARIA_basics
'ARIA-live regions for JavaScript frameworks - LogRocket Blog,' https://blog.logrocket.com/aria-live-regions-for-javascript-frameworks/
'How to Implement ARIA Tags for Better Accessibility: A Comprehensive Guide for Web Developers - DEV Community,' https://dev.to/sarveshh/how-to-implement-aria-tags-for-better-accessibility-a-comprehensive-guide-for-web-developers-h3k .
General References
'Accessibility,' https://developer.mozilla.org/en-US/docs/Learn/Accessibility
'ARIA in HTML,' https://www.w3.org/TR/html-aria/
'Accessible Rich Internet Applications (WAI-ARIA) 1.1,' https://www.w3.org/TR/wai-aria-1.1/ .
Links to extra support and other resources
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