The Drupal Kit includes two components related to social media. The "Add to Any" component provides links to share a page from the website on one or more social media platforms, or via email. The "Social Links" component provides links to your organization's account on social media platforms.
Provide ready-made share links to page content
The AddToAny module provides a configurable block, shown below, contain links for site visitors to share page content using common social media outlets. See https://drupalkit.its.utexas.edu/docs/configuration/social_media_share_links.html#add-social-sharing-links-to-a-specific-flex-page
Link to your organization's social media accounts
The Social Links component, shown below, includes social media icons that link to an organization's social media presence. See https://drupalkit.its.utexas.edu/docs/configuration/social_media_icons.html