Hello @Groupeilboudo

To make your featured content area image clickable you need to follow the steps below:
First you need to create and activate child theme. Reference here for child theme.
https://codex.wordpress.org/Child_Themes

After successfully creating the child theme of this theme you need to add below code in functions.php file.

function education_hub_render_featured_content( $content_details = array() ) {

		if ( empty( $content_details ) ) {
			return;
		}
		?>
		<div id="featured-content">
			<div class="container">
				<div class="inner-wrapper featured-content-column-<?php echo absint( count( $content_details ) ); ?>">
				<?php foreach ($content_details as $content ): ?>
					<article>
						<header class="entry-header"><h2 class="entry-title"><a href="<?php echo esc_url( $content['url'] ); ?>"><?php echo esc_attr( $content['title'] ); ?></h2></header>
						<?php if ( ! empty( $content['images'] ) ): ?>
							<img src="<?php echo esc_url( $content['images'][0]); ?>" alt="<?php echo esc_attr( $content['title'] ); ?>" width="<?php echo esc_attr( $content['images'][1]); ?>" height="<?php echo esc_attr( $content['images'][2]); ?>" /></a>
						<?php endif ?>
						<div class="entry-content">
							<p><?php echo $content['excerpt']; ?></p>
						</div>
					</article>
				<?php endforeach ?>
				</div>
			</div>
		</div>

		<?php

	}

By now it should be done.
Hope this will help to resolve your issue.
Let us know how it goes.

Regards!!!!

Guys, I have added the above code to my own site’s child theme functions.php file as I want my featured posts on the home page to be clickable as well….for some reason the posts do not then become clickable. Any ideas?

http://www.guitarandmusicinstitute.com