Hi newbie,
If you're doing some research there are tons of great resources out there for you. I'll point you in the direction of a few of my favs:
I find several helpful articles on ezine.com. This one may help you now: http://ezinearticles.com/?Stock-Market-Short-Selling---How-Do-You-Know-Which-Stocks-to-Sell-Short?&id=2191366
Also, I found this report extremely helpful. It gives you 7 tips for becoming a successful trader. Here's the link:
http://www.netpicks.com/7commandments/
Hope this helps.