Frank,
You can do that. First find the icon you’d like to use. Then go to the Media section and select “Add New.” Upload your image and then click edit once the upload is finished. Copy the URL to your image.
Then go to the Appearance section and select Edit. From the list of files on your right, choose header.php and look for this spot near the bottom:
</header>
Right above that enter this:
You’ll need to replace the http://yourlink.com
with the URL you’d like to link to and the http://yoursite.com/image.png
with the URL to your image you copied earlier. Save your changes.
That should have added in your icon. Next you’ll need to add this snippet to your Custom CSS box:
img#image-link {
position: absolute;
left: 0px;
bottom: 0px;
}
That will set the icon right at the bottom left of the header. You may need to adjust the left and bottom values there to position it like you want to. Update your settings and see how that looks.
Let me know if you have any trouble,
Bill