Alternative Investment Opportunities Can Anyone Give Me Some Investment Advice?

Can anyone give me some investment advice? - alternative investment opportunities

I sell a car. Once I've sold $ 8,000 for the work. I could also use it to $ 8,000 credit (interest rates) and the remains of a car loan, I have to pay.

Otherwise, I was wondering what kind of investment opportunities can be cheaper and more profitable?

Looking for something to begin to invest aggressively than I could have done that $ 8,000 to $ 16,000 (in a relatively short time, I believe) at least one year.

With the return on investment, please specify the level of risk.

Thank you I appreciate your help.