Here are links to some of my favorite information resources:
I Was In An Abusive Relationship And Didn't Know It, one woman's experience
Five Things You Need To Know About Narcissists. A podcast that is a no-holds-barred description of reality.
Toxic Relationship Patterns. A long-ish article but so complete and informative. This is why you two fight!
The Sociopath Next Door (a must read book!)
Predators: Pedophiles, Rapists, & Other Sex Offenders (another must read!)