GOLD question?

GOLD trade in what ? pay commission or what ?
How do I calculate profit and loss?
leverage ?
margin ?
best broker ?
trade software ?

thanks guys

Oanda and some other brokers have gold (XAU/USD) on their platforms and it can be traded the same way you trade a currency.

Currently about 940 USD per ounce so 10 ounces will be 9400 USD and if you have 100:1 margin that trade would cost you 94 dollars.