Hi @giuliasampogna!
Your first step will be to set up a child theme so you can make the necessary change without risking it being lost in a future theme update ??
Once you have your child theme, you’ll make a copy of the parent theme’s content.php
file in your child theme folder.
In you copy, look for <div class="entry-meta">
on or around line 22. That’s the section where we’ll add your author name.
Here’s what it looks like before making any changes:
<div class="entry-meta">
<?php sela_entry_meta(); ?>
</div><!-- .entry-meta -->
Here’s what we’re going to replace that with:
<div class="entry-meta">
<?php if ( is_single() ) { ?>
<span class="author"><?php the_author_posts_link(); ?></span>
<?php }
sela_entry_meta(); ?>
</div><!-- .entry-meta -->
We’re adding a condition to check that we’re on a single blog post (not somewhere else, like the home page) and then displaying a link to a page with all of the author’s posts.
Give that a try and let me know how it looks