Hi lizzy, welcome to the forum. There's a wealth of information here for you to read, and many knowledgeable people here to help get your credit health better.
We have a language of our own. In the "Understanding FICO scoring, is a glossary of common abbreviations:
http://ficoforums.myfico.com/fico/board/message?board.id=ficoscoring&thread.id=1325
CR = Credit Report
CA = Collection Agency
PFD = Pay for Delete
With a total absence of credit history, I'd suggest finding a CU(credit union), joining it and taking out a small loan...paying on it religiously each time every time, and apply for a cc. It's a common way, and imo the best way to get credit established and a cc.
Look at the black menu bar at top of page. On the right hand side is "Get a Credit Card"
Explore that, and choose "POOR" in the Fico score box.
When was the last time he pulled a credit reoprt? Can you give us details on the "negative marks"? We need more detailed information in order to the best course of action to take.