When you create a custom links to the social networks and add them to the Social Link Menu the icons will appear somewhere on the footer. First Add a menu under Appearance -> Menu -> Add Menu, then create custom links to for example facebook.com and ADD them to the Social Links Menu or Social Menu. The Icons will appear.
My second question is, i thought the links/icons are also supposed to appear automatically somewhere on the header once you have activated them?
Check the following code for the header
<?php if ( has_nav_menu( 'primary' ) || has_nav_menu( 'social' ) ) : ?>
<button id="menu-toggle" class="menu-toggle"><?php _e( 'Menu', 'twentysixteen' ); ?></button>
<div id="site-header-menu" class="site-header-menu">
<?php if ( has_nav_menu( 'primary' ) ) : ?>
<nav id="site-navigation" class="main-navigation" role="navigation" aria-label="<?php _e( 'Primary Menu', 'twentysixteen' ); ?>">
<?php
wp_nav_menu( array(
'theme_location' => 'primary',
'menu_class' => 'primary-menu',
) );
?>
</nav><!-- .main-navigation -->
<?php endif; ?>
<?php if ( has_nav_menu( 'social' ) ) : ?>
<nav id="social-navigation" class="social-navigation" role="navigation" aria-label="<?php _e( 'Social Links Menu', 'twentysixteen' ); ?>">
<?php
wp_nav_menu( array(
'theme_location' => 'social',
'menu_class' => 'social-links-menu',
'depth' => 1,
'link_before' => '<span class="screen-reader-text">',
'link_after' => '</span>',
) );
?>
</nav><!-- .social-navigation -->
<?php endif; ?>
Footer Code
<?php if ( has_nav_menu( 'primary' ) ) : ?>
<nav class="main-navigation" role="navigation" aria-label="<?php _e( 'Footer Primary Menu', 'twentysixteen' ); ?>">
<?php
wp_nav_menu( array(
'theme_location' => 'primary',
'menu_class' => 'primary-menu',
) );
?>
</nav><!-- .main-navigation -->
<?php endif; ?>
<?php if ( has_nav_menu( 'social' ) ) : ?>
<nav class="social-navigation" role="navigation" aria-label="<?php _e( 'Footer Social Links Menu', 'twentysixteen' ); ?>">
<?php
wp_nav_menu( array(
'theme_location' => 'social',
'menu_class' => 'social-links-menu',
'depth' => 1,
'link_before' => '<span class="screen-reader-text">',
'link_after' => '</span>',
) );
?>
</nav><!-- .social-navigation -->
<?php endif; ?>
How can i add the social icons somewhere on the header, far right?