After you have the button installed, whenever you are online shopping, and are looking at a particular item, you just click "Wish List" and a window pops up for you to fill out the quantity and so forth. And there ya go! If you want to see your whole wish list or send it to someone you just go back to Amazon.
Again, I figured it out, you can too. Super cool way to keep up with the stuff you have your eye on. Plus the stuff doesn't have to be from Amazon, ANY store works, even Etsy!