What is your situation? Do you have an "emergency fund" established already? By that I mean enough money to be able to pay your bills for nine months to a year (used to say six to nine months but with this economy if you lose a job for any reason it could take at least that long to get a new one)? That should be in something safe and fairly liquid. No stocks, bonds, or commodities- more like savings account. This should be the first goal.
Do you have debt? If you have credit card debt in particular, it would be wise to get rid of that first. You want to get rid of any debt where you are paying a higher rate in interest than you can get from any other investment. If for example you are paying ten percent on a loan and can get 5% from an investment, you are losing 5% by not paying that debt.
Are you looking short or long term? When might you need this money? If it is money you will probably need in the next few years, you want to keep things at low risk. Sure you can make money on investments, but you can also lose money. You don't want to risk money you might actually need for something like say college or to buy a house or car.