Joanna Falkowska spoke about creating accessible websites at DEV: Challenge Accepted.
Web accessibility is about making web content available to users with disabilities. Falkowska suggested using the Web Content Accessibility Guidelines to improve accessibility and create an inclusive website.
According to the article, she did not mention a specific training program. But, she shared basic tips on how to learn on your own. And, she mentioned that employers are looking for these skills in web developers especially in jurisdictions with accessibility laws.