Fact sheets about PTSD.
An award-winning site about traumatic stress. Available in both English and Spanish.
From the Sidran Foundation, a glossary of terms used in the discussion of trauma disorders. Not all terms are basic, but the glossary is a good tool to use if you're educating yourself about PTSD and dissociative disorders.
The European Description. From Internet Mental Health.
A brief, clear introduction in question and answer format from At Health, Inc.