Hello.
Yes, you can customize your header.php file, adding a button as you like.
This will require server-level access (or, FTP).
An example button:
<input type="button" value="Getting Started">
or, HTML5:
<button><a href="//dynamic WordPress link here">Getting Started</a></button>
Have fun!
Thank you for the answer, but this adds button on bottom of header. Is it possible to put it in the middle, on top of slider?
@klejejs,
First of Link is not working on button so remove button.
and make <a href="//dynamic WordPress link here">Getting Started</a>
Add css for display on slider.
.hero-section > a {
background: #000 none repeat scroll 0 0;
cursor: pointer;
margin-left: 85%;
margin-top: calc(-25%);
padding: 0;
position: absolute;
z-index: 10000;
}