There is content box shortcode for you to use in a page.
There is Theme Options -> Front page content boxes
for you to add content boxes to homepage.
Using the example button code.
<a class="read-more btn" href="#">Learn more</a>
You can modify and point to google, be replacing # with URL
<a class="read-more btn" href="http://google.com">Learn more</a>
Content box are for writing an excerpt of a page and button link to page that you want user’s attention.