Social icons
You can have social icons which could lead to your social profile.
Out-of-the box it has:
They could be setup in _config.yml.
To add more icons do following steps:
- choose an icon you want to use: Font Awesome Icons
 - add variable in 
_config.yml - add icon in 
social.htmlwith check if variable exists: 
{% if site.social.rss %}
  <li>
    <a title="{{ site.social.<your_social_variable> }}" 
       href="{{site.url}}/{{ site.social.<your_social_variable> }}" 
       target="_blank"><font_awesome_icon></i></a>
  </li>
{% endif %}Share buttons
This theme comes with built-in share buttons. You can see them in the bottom of this post.
To turn them on in the header of your post add:
layout: post
title: "Be sociable"
date: 2016-05-15 16:25:06
description: Built-in share buttons!
share: true <-- hereIf you want to disable some of them - go to _config.yml:
_config.yml
share:
  facebook: true
  twitter: true
  gplus: true
  linkedin: true
  pinterest: true
  email: trueTo add new buttons:
- add icon name in _config.yml;
 - add section in _includes/share.html;
 - add styles in css/theme.css.