This introductory document from the Web Accessibility Initiative (WAI) can be seen as an “entry point” to make it through the various (a lot of) accessibility-related standards and supporting documents provided by the World Wide Web Consortium (W3C). Documents are grouped by the topics they cover, and a brief overview illustrating its main purpose is provided for each of them. It includes pointers to both normative documents (i.e. official standards and recommendations) and informative resources (i.e. guides, tutorials, etc.).
This document also includes references to so-called “working drafts”, documents that the consortium is still working on and are subject to (substantial) change over time.