Is it possible to only have a couple lines shown per post (or even 0 lines) on the homepage? Instead of dumping the whole article on the page?
Look somewhere after the "Loop" starts (it starts with
If you're using a theme from wordpress.org, it would best to do this in a child theme, so you can keep the original theme up to date.
If you don't know about it then my suggestion is to not use theme editor from wordpress because one single syntax error may harm your site
so login to your hosting panel
public_html -> your wordpress folder -> wp_content -> themes -> your theme name -> child theme name (if any) -> index.php
Now open it in your text editor and find the_content(); and replace it with the_excerpt();
and then go to your site and press cntrl + f5 if its not changed yet and you're done.