OK -- if you're talking about 'day trading' then Backcountry's info is spot on. You always hear stories about people doubling, tripling, whatever, their money. Nobody ever talks about it when they lose. It's just about like going to the casino -- the odds are heavily stacked against you and you'll lose more often than you win.
I recently got satellite radio, and I hear the commercials on Fox radio. Pennystockchaser.com, buy gold now, etc. I'd ignore that BS. I'm not saying gold won't go to 2,000, but geez -- do you really want to jump in on something that's already moved up 50% (or whatever)? Penny stocks are, as Backcountry said, about as risky as it gets.
Buying Conoco for a long-term investment is probably not a bad bet. They sell oil, and we seem to be using quite a lot of it. Ford is the only US car company not to require a massive bailout, and are building good quality vehicles. They're kinda my sentimental favorite for just getting it right. They're certainly not out of the woods yet, but we're always gonna need cars, and I'd bet a lot of them will be Fords.
If you look at the industries that have been battered by all this, and pick out the guys that have done the best you're able to see who knows how to run a business. And, a lot of the stocks are still tamped down, just because. A couple that come to mind are GE, Ford or Wells Fargo.