Need some help

#1
Ok, short history. I opened a scottrade account January 1st and started with 13k. I have made about 600 realized but am down about 3000 on stocks I still own. I have learned allot from this website and stocktiger. So, I am doing much better now but still learning.
The question.... Should I sell those stocks I am down on and use the money to make up my loss or hold on to them and wait for them to come back (if they do)?
I have ERFW, WFWL, NSLT, HMSG and PMED. They were all doing well but I held them to long. What decisions are to be taken? How should I decide whether I should purchase the stock or not? Need your Help desperately