As the processes in HTML 5 & CSS3 working groups move forward everyday, it is getting much more clear that new standards are not too far.
There are lots of new tutorials, resources being created on HTML 5 / CSS3 including cheat sheets which are very functional helpers for anyone willing to code with these standards.
This document lists all of the requirements (called "success criteria") from Web Content Accessibility Guidelines (WCAG) 2.0. It also lists techniques to meet the requirements, which link to more details. The "Understanding" links go to descriptions, examples, and resources.