New to investing

Invest in a few blue chips that pay substantial dividends, preferably in a dividend reinvestment program. Collect your dividends as you learn as much as you can about the companies and the various factors which impact their stock prices.

Open an IRA if you haven't. Look into roth vs traditional on google or the like.
Start putting into a 401k if you haven't.

Lots of people on here are partial to index funds which take a lot of guesswork out of investing

For n00bs with not very much money at all I suggest a couple of things:

1) The usual choice (and it is what I do myself) is to set aside as much as you can each month in a tax-deferred account such as a IRA or 401(k). I like the Roth since you can pull out contributions at any time without any penalty - this means it can double as an emergency fund while you build it up and still get the tax break.

2) Or (stay with me for a second) you can take up day trading. Not to get rich, but to figure out early when there isn't much to risk that yes, the market really is tough to beat and learn what your risk tolerance is. I've seen too many bored retirees decide they can get rich by day trading naked options, and yes you can do okay for awhile. Until it goes to hell. Better to learn this early while you can recover with future earnings.

diversify, dollar cost average and don't miss a month