JFBCLike module adds ?sbid=32 to site URL , og:image is missing

1) The sbid=32 isn't appearing in the Like button, it's actually in the Open Graph URL tag (og:url). I'm not sure why that's being set that way. JFBConnect basically asks Joomla what the URL is for the current page, and we use that. I don't know why Joomla is returning the URL with that setting. To fix it though, I'd recommend adding the following tag somewhere to the contents of your home page (an article displayed or a module output):
{SCOpenGraph url=http://www.itgirl.hr/}
That will override JFBConnect's detection of the URL.

2) Likewise, for an image, you can add:
{SCOpenGraph image=http://www.itgirl.hr/link-to-image.jpg}
Also, in the Open Graph configuration area, you can add the following to the "Defaults" box:
image=http://www.itgirl.hr/default-image.jpg
That will add a 'backup' image that can be used on any page that an Open Graph image wasn't automatically or intentionally set (with the SCOpenGraph tag).

3) If you haven't already, install and publish the Open Graph - Content plugin. That should automatically try to find the first image in an article and set it as the og:image tag.

Hope that helps, but if not, let us know.

Thanks,
Alex