Learning accessibility is important is you are a developer, designer, project manager, or QA. The documentation of WCAG could be overwhelming but one cannot ignore that it is official documentation hence, it goes in depth.

If you are looking for on-point resources to learn accessibility then here is the list which I refer whenever I need to learn accessibility

Videos

A11Ycasts

edx

Blogs and Articles

WebAIM

W3C

24a11y

Inclusive Components

MDN

Happy Learning!!