Options give a trader a contractual right to buy or sell an asset at a strike price. Online options trading, give a trader the liberty to select what time is convenient for them to carry out a trade. The traders right to buy an option is called a call, while the right to sell is called a put. These are the only two options in option trading, you can either call or put. The trade is set for a certain amount of time, in which period the trader can chose to sell or retain their trade. At expiration of the time frame, the trader wither gains, or looses from the option. Options trading is a speculative trade in nature and carries with it risks of loosing your money, but done properly, it can be very profitable.