"Intopia Learn will teach you how to create accessible experiences for everyone. Our courses are built by learning and accessibility professionals to give you the knowledge and tools you need in your everyday work."

"Microsoft Inclusive Design is a practice that anyone who creates and manages products and services can use to build more inclusive experiences for everyone. Get the principles, guidebooks, workshop tools, videos, and many more free resources."

Corbb O'Connor: Shop Accessible: Concrete Strategies for Procuring Accessible/Inaccessible Solutions

"This evaluation guide outlines important accessibility checks, organized by content type. While it is not an exhaustive guide to testing all WCAG 2 requirements, it includes checks for most common accessibility issues."

Demonstration of automatic testing of the following three categories of issues:

1. Name, Role, Value (WCAG Success Criteria 4.1.2 - Missing role, state, or text for components)
2. Info and Relationships (WCAG Success Criteria 1.3.1 - conveying information, structure, and relationships)
3. Keyboard (WCAG Success Criteria 2.1.1 - all content operable through keyboard)

HTMHell: A collection of bad practices in HTML, copied from real websites. By Deborah Edwards-Oñoro

"The Accessible Publishing Knowledge Base provides best practices for creating accessible digital publications. Its primary focus is on EPUB but can be used as a reference for any HTML-based format. The primary focus of the site is on making EPUB 3 publications that conform to the EPUB Accessibility standard, but the practices can be applied to any web-standards based publishing format."

"Accessibility requirements for ICT products and services"

Access Guide is an introduction to digital accessibility - specifically to help understand Web Content Accessibility Guidelines 2.1 (WCAG).

W3C First Public Working Draft 21 January 2021

"This page introduces the in-progress W3C Accessibility Guidelines (WCAG) 3.0 Working Draft. It explains how WCAG 3 is related to WCAG 2. This page is the starting point for information about WCAG 3 now and in the future."

W3C Working Draft 08 June 2021

Blog entry on 06 July 2021: "The much anticipated First Public Working Draft of the W3C Accessibility Guidelines (WCAG) 3.0 was recently released, with ongoing calls for feedback as the Working Draft develops. Showcasing a new structure, a new naming convention and promising a more understandable, easier to digest set of guidelines. These guidelines are expected to be far more inclusive and look beyond web content."

"The WebAIM newsletter is for people that are interested in receiving monthly news and updates on web accessibility issues. The newsletter will include featured articles, monthly tips, resources, and questions from WebAIM's discussion forum." There is an archive, too.

"The following is NOT the Web Content Accessibility Guidelines (WCAG) 2. It is a checklist that presents our recommendations for implementing accessibility principles and techniques for those seeking WCAG conformance. The language used here significantly simplifies and condenses the official WCAG 2.1 specification and supporting materials to make it easier to implement and verify for web pages."

"Get a strong foundation in digital accessibility to make your websites and apps work well for people with disabilities, meet international standards, and provide a better user experience for everyone."

"helps you determine the legibility of text and the contrast of visual elements, such as graphical controls and visual indicators."

"This decision tree describes how to use the alt attribute of the <img> element in various situations."

"This validator checks the markup validity of Web documents in HTML, XHTML, SMIL, MathML, etc."

"Strategies, standards, and supporting resources to help you make the Web more accessible to people with disabilities."