Sidebar left

Hi,

I want to add a left sidebar to this theme.
I’ve followed the tutorials for that and I added this code :

<section id="sidebar-left" class="secondary clearfix" role="complementary" >		<?php
			dynamic_sidebar('sidebar-left');
						 ?>
	</section>

in the file that I’ve created “sidebar-left.php”
and this code :

register_sidebar( array(
		'name' => __( 'sidebar-left', 'smartline-lite' ),
		'id' => 'sidebar-left',
		'description' => __( 'Appears on posts and pages except Magazine Homepage and Fullwidth template.', 'smartline-lite' ),
		'before_widget' => '<aside id="%1$s" class="widget %2$s clearfix">',
		'after_widget' => '</aside>',
		'before_title' => '<h3 class="widgettitle"><span>',
		'after_title' => '</span></h3>',
	));

in the file : functions.php

The sidebar appears in the admin (I can add widgets) but not at the front of the website.
I’ve no cache plugin.
Can you help me ?

Many thanks