Here are some websites where you can find more information on the Alexander Technique and related topics.

American Society for the Alexander Technique
The website for the largest professional organization of certified Alexander Technique teachers in the United States.  Find information about the Technique and a national directory of teachers.

The Complete Guide to the Alexander Technique
This site contains a wealth of information about the Technique, as well as articles, links, downloads, and videos on the Alexander Technique and its many applications.