What is it? Who uses it? Where can I find more information?
http://www.asha.org/public/speech/disorders/AAC/
Books on AAC, Terminology, Early Intervention information, long list of ACC links
http://aac.unl.edu/AAC_Academic.html
Purchase books AAC
http://www.amazon.com/s?ie=UTF8&page=1&rh=i%3Aaps%2Ck%3Aaugmentative%20and%20alternative%20communication
International Society For Augmentative and Alternative Communication
https://www.isaac-online.org/english/home/