Below are some Canadian links for PTSD that are good to check out:
The above page about SYMPTOM MANAGEMENT is only one of many pages, checkout the rest of their site too!... although geared to Canadian military types, there is much practical factual info that will help EVERYONE whether Canadian or from elsewhere!
Veterans sites, I find are the BEST for PTSD research and PTSD info
Operational Stress Injury Support (Canadian Miltary types)
Trauma Anonymous: (has forum and chat)
Canadian Trauma Network: (links)