That's a long answer. Here's the gist;
Example: let's say you think Apple is going to increase in price from a current $40 per share to $60 per share. You can purchase an option to buy the stock at the current price and pay an option fee rather than buying the whole $40 amount up front. Say, $4/share.
So let's say you have $10k in your retirement, you could take $1k and buy a call option of 250 shares of Apple. The stock rises to $60 as expected and you strike. You now buy/sell at $40/$60 and you now have increased your position from $10k to $15k and no taxes paid on the gains.
Here is how I do it, though.
Using same example. Instead of buying a call option on 250 shares, I will buy it for 2500 shares... even though I don't have enough money to buy the stocks when I strike. The stock raises to $60. Now my option is "worth" $20 x 2500 or a profit of $50k. I then sell my option for $40k and let some other person or firm make an immediate and easy $10k.
So I made a fast $40k.
Now, I actually don't play the market. Real estate is my thing.
So I find a deal on real estate, buy an option to purchase it, and then find another buyer that will pay me a nice profit to purchase my option.
Real example: I bought an option on a ranch for $5k. I then found a buyer that was willing to pay $1m more for the ranch than what I had negotiated. I sell him my option for $500,000. He gets a deal, I get a profit of $495,000 that is not taxed because it was profit earned from money in my IRA.