How To Display Other Blogs Feeds to Your WordPress Blog

1. Open the template file you want to put the other blogs’ feeds. For illustration purposes, we will going to edit the sidebar.php. Our goal is to display the latest n posts of our target blog. In my example, we will going to display the latest 3 posts.
2. To do this, just add the following code anywhere in the sidebar.php where you want to display the feeds, customizing the highlighted text with your own preference :

<h2><?php _e('LifeGuide'); ?></h2>
<?php // Get RSS Feed(s)
include_once(ABSPATH . WPINC . '/rss.php');
$rss = fetch_rss('http://feeds.feedburner.com/EasyLifeGuide');
$maxitems = 3;
$items = array_slice($rss->items, 0, $maxitems);
?>
<ul>
<?php if (empty($items)) echo '<li>No items</li>';
else
foreach ( $items as $item ) : ?>
<li><a href='<?php echo $item['link']; ?>'
title='<?php echo $item['title']; ?>'>
<?php echo $item['title']; ?>
</a></li>
<?php endforeach; ?>
</ul>

3. Apply some CSS customization on the appearance, the above code should look like the image below.

Source(s): WordPress Documentation