page-home.php

<?php get_header(); ?>

<div id="main-content">
 <h2><?php the_title(); ?></h2>
 <p><?php the_content(); ?></p>
</div>

<div id="sidebar">
  First sidebar:
  <?php get_sidebar(); ?>
  
  Second Sidebar:
  <?php get_sidebar('two'); ?>
  
</div>

<?php get_footer(); ?>

sidebar-two.php

<div>
 This is another sidebar, it will be shown anytime you call get_sidebar('two');
 Notice how the filename is "sidebar-two.php"?
 Anytime you call get_sidebar() --> it will look for "sidebar.php"
 If you pass an argument, such as get_sidebar("NAME) --> it will look for "sidebar-NAME.php"
</div>

sidebar.php

<div>
 This is your main side bar :) It will be shown any time you call get_sidebar();
</div>