Spots are very easy to trade (if your contest allows it). Simply choose the action like you would with a stock, select the quantity and the spot you wish to trade from the dropdown from the Spots trading page. Click on this post for more details.
Spot and Futures contracts are a standardized, transferable legal agreement to make or take delivery of a specified amount of a certain commodity, currency, or an asset at the current date. The price is determined when the agreement is made.