The Anxiety Disorders Association of America web site is complete with information all anxiety disorders, as well as a special section on teen anxiety.
BeyondAnxiety.com provides skills, support and community for anxiety sufferers. Web site includes information about all forms of anxiety, such as social phobia, PTSD, OCD, etc.
Web site presents short articles about anxiety, phobias, and disorders including obsessive compulsive disorder, including advice on coping with anxious feelings.