Go to the Google Font Page
You have your page laid out, with the content fairly well in place. The fonts that are most commonly available on the widest number of computers is fairly limited, so you can use online fonts instead.
Google has a number of fonts that they allow you to use. Visit the Google Fonts page at https//www.google.com/fonts
Look around the page. They have instructions at the top right side of the page New to Google Fonts? that tell you how to use their fonts. You can build your own Google font library or use the Quick Use feature to quickly link a font or two to your website. They write the link and the CSS code you need to make it all work
Go to the next step.