Abuse

C-PTSD:
Out of the Fog’s C-PTSD pages here and here, and their glossary.

Beauty After Bruises, a C-PTSD and Dissociative Trauma Disorder resource.

Emotional abuse:
If you’re in an emotionally abusive relationship; Healthy anger as part of healing

Addiction

SMART Recovery: An alternative to 12-step programs that can be applied to a variety of addictions (some of their principles are described here).