You'll notice that in this example, we sold something (a call option) that we didn't already own. Don't worry about this for now. If you decide to do a trade like this, just make sure that you use a "sell to open" order when selling the call option. If you decide to exit this position, you'll need to use a "buy to close" order to get rid of the call option. After this order is executed, you are free to sell your stock as you normally would. Just never sell your stock before you have exited the call position, or you'll risk getting yourself in trouble.
