Search on Google, you will surely find a lot of options.

You should ask somebody who is expert in it. Try to ask from profit.biz or Google.

No, Not at all. But you should make some rules:-

If you're not sure, don't trade.

Always put stop loss.

If you cannot afford to lose, you cannot afford to win.

Money that is invested with an expectation of profit.

Try to invest your money in commodity market & make profit. Then you will understand the meaning of investment in better way.

Any good exchanged during commerce, which includes goods traded on a commodity exchange.