You can add links to a multitude of social services in the site navigation bar or under the toggle menu, using the following steps:
1. Create a new Custom Menu, and assign it to either of the Social Links menu locations.
2. Add links to each of your social services using the Links panel.
3. Icons for your social links will appear in the navigation bar, or behind the menu button, underneath the main navigation menu.
If you need further help with it, just let me know!