Summary
I really hope that you have enjoyed this brief introduction to accessibility, found it useful, and now feel more confident about using Joomla! to build more accessible websites. For more, keep an eye on the Joomla! forums and don't be shy about posting any queries you have.
If you would like to lean more about accessibility and have some other questions that you would like to ask, I recommend two great online forums where your query will be answered by the planet's best accessibility advocates and developers. They are the WebAIM mailing list (http://www.webaim.org) and the Accessify Forum (http://www.accessifyforum.com/).
Both are great resources with lots of capable contributors who will always be glad to help.