First, my apologies as I see I did not do a tutorial for this. The theme already has the “breadcrumbs” code in conjunction with installing a plugin called NavXT Breadcrumbs:
http://wordpress.org/plugins/breadcrumb-navxt/
Once you activate the plugin, the code in the header.php (which is where the breadcrumbs is) will detect it.
NavXT has over a million users of it, so it’s a good one to use an it’s the one being used on the demo site. By the way, nice job on your site.
Also, please post support questions relating to a specific theme to the appropriate theme category. You posted this in Suggestion Box. I just moved this topic to Preference.