Free PTSD and mindfulness apps developed by the VA:

http://www.ptsd.va.gov/public/materials/apps/index.asp

There's a CBT app, too, but targeted at insomnia.

Text resources on various adolescent mental health issues, written to both adolescents and caregivers at www.copecaredeal.org, now http://www.annenbergpublicpolicycenter.org/aci/copecaredeal-org/

...pronounced like the long vowel and first letter of the alphabet...