Site Info is a Landkit Widget available after activation of Landkit Extensions plugin. It displays your Logo, description and social icons.
Logo
You can upload your site logo from Appearance > Site Identity > Site Logo
Description
You can set your website’s description from Setting > General > Description
Social Icons
You can list all social media profiles related to your theme from Appearance > Menus. You can use any of the social media icons provided by FontAwesome to add.
Once you’ve added your social media profiles as a menu, assign the created menu to Social Media menu location.