Adding tooltips to Simple Social Icons using Zebra_Tooltips jQuery script. http://sridharkatakam.com/add-tooltips-simple-social-icons/

gistfile1.php

// Enqueue Zebra ToolTips
add_action( 'wp_enqueue_scripts', 'enqueue_zebra_script' );
function enqueue_zebra_script() {

	wp_enqueue_script( 'zebra-tooltips', get_stylesheet_directory_uri() . '/js/zebra_tooltips.js', array( 'jquery' ), '', true );
	wp_enqueue_script( 'zebra-tooltips-init', get_stylesheet_directory_uri() . '/js/zebra_tooltips_init.js', array( 'zebra-tooltips' ), '1.0.0', true );
	wp_enqueue_style( 'zebra-styles', get_bloginfo('stylesheet_directory').'/css/zebra_tooltips.css', array(), '1.0.0' );

}

zebra_tooltips_init.js

jQuery(document).ready(function($) {

	$('.simple-social-icons a').attr({
  		'class': 'tooltip'
	});

	$('.simple-social-icons .social-email a').attr({
  		'title': 'Send me a Mail'
	});

	$('.simple-social-icons .social-facebook a').attr({
  		'title': 'Catch me on Facebook'
	});

	$('.simple-social-icons .social-gplus a').attr({
  		'title': 'Follow my updates on Google+'
	});

	$('.simple-social-icons .social-linkedin a').attr({
  		'title': 'Read my work profile'
	});

	$('.simple-social-icons .social-youtube a').attr({
  		'title': 'Watch my screencasts'
	});

	new $.Zebra_Tooltips($('.tooltip'));

});