This website is for the use of veterans and the general public. It has a lot of good information, including a database called PILO TS (stands for Published International Literature on Traumatic Stress.). Anyone can search this database for articles on PTSD from all sources, not just scientific journals. It is free. You can also find other resources and information here.
For Veterans and their families and caregivers:
National Resource Directory
Wounded Warrior Project
Coming Home Project
Give An Hour