Thanks for the additional information. Coraline doesn’t display featured images for each post on the homepage, but it can be done with some editing of loop.php in your child theme folder. Are you comfortable editing PHP/HTML theme files? You would need to insert a featured image to the loop.php file.
The code to display a featured image for each post would be something like this:
<?php
if ( has_post_thumbnail() ) { // check if the post has a Post Thumbnail
the_post_thumbnail('medium');
}
?>
You’d add this code where you would like the featured image displayed.
More about the featured image (aka post thumbnail) function.
You can also use a different size than medium if you’d like the featured images smaller or larger.
You could try adding it after line 143:
<div class="entry-content">
You’ll then need to add corresponding CSS to your child theme’s style.css file to style the featured image as you like.
Good luck!