Just giving my uneducated opinion on investing, but if you have a fair sum of money, such as $10,000, I would say create a Scottrade Brokage account and purchase stock options.
That's probably the easiest and safest way to make quick "big" money. At worst (other than the small fee), you'll lose what you invested, nothing more. The thing is, you must make at least a 2% profit to cover the small fees Scottrade will impose on you (at $7 per trade, you figure you buy and sell your stock option if you invest all of your $10,000 in one stock option, so you'll pay them $14 in fees).
I would invest the remainder of your money in a high-yield interest-bearing account (I use American Express), and in US treasury bonds.
All of that said, you may receive some better help from more knowledgeable in the Investing forum of C-D...
https://www.city-data.com/forum/investing/