as a way of speculating to make money, futures and options are no different really than speculating outright on a stock or anything else, apart from the fact that they allow you to use greater leverage, magnifying any gains or losses you incur.
as a way of hedging risk in your current positions, they are useful as "insurance" as in you pay a little now to hedge your risk of losing a lot later on should the position tank.
covered calls are the most popular option written for the average joe, allowing you to collect premiums on a stock you already own in exchange for agreeing to sell the stock at a certain price in the future, should it rise to that level. a lot to learn about options, I might actually take a whole class on them next year but I haven't decided if it's worthwhile for me or not.