Want to add image to left of Tagline

Hi, you can use this function in your child theme functions.php file

add_filter( 'tc_tagline_display' , 'my_icon_in_tagline');

function my_icon_in_tagline() {
	global $wp_current_filter;
	?>
		<?php if ( !in_array( '__navbar' , $wp_current_filter ) )  :?>
			<div class="container outside">
		        <h2 class="site-description">
		        <img src="http://icons.iconarchive.com/icons/iconshock/google-buzz/24/buzz-9-icon.png" alt="Buzz">
			<?php bloginfo( 'description' ); ?>

		        </h2>

		    </div>
		<?php else : //when hooked on __navbar ?>
			<h2 class="span7 inside site-description">
			<img src="http://icons.iconarchive.com/icons/iconshock/google-buzz/24/buzz-9-icon.png" alt="Buzz">
			<?php bloginfo( 'description' ); ?>
	        </h2>

		<?php endif; ?>
	<?php
}

Icon in example is just some buzz icon, you need to replace it with the link to your icon. If you need more icons, just make few more <img> tag lines.
I hope this will help.

You can always add class to the img tag
like <img src="link_to_image" class="image_class">
and after that you can apply all the css rules in style.css that you want.
I also recommend to you to take a look at Customizr snippets page, its great resource
Btw, you can make this thread resolved. Thanks.

You have social icons block on the left side. It consumes about 40% of the available space (span5) while tagline has 60% (span7).

It make sense :), especialy 1 and 3.
You can add

.navbar-inner .social-block {
display: none;
}

to your custom css to remove social icons block and then you can enlarge span number (up to 12) in above function.