I was so confused myself about PTSD and then I came across information online that felt to me like the individual who wrote it was putting so much of how I struggled into words that it was just such a relief.
This is a good source of information too:
http:
www.bullyonline.org/stress/ptsd.htm
It meant a lot to me in understanding the difference between Hypervigilance and Paranoia and between Mental Illness and Psychiatric Injury.
Welcome to PC MyFriendAmy and the PTSD forum.
((Hugs))
OE