Show WP Post Excerpts not Full Content

There are different ways to display only post excerpts, not the full content of wordpress post in your home page or categories. Following are two different methods WordPress users can choose.
Show WP Post Excerpts not Full Content

Use the More Tag to Display WP Post Excerpts

In WordPress Visual or HTML Edit Post Panel, you can find the More button or tag to show only post excerpts other than full content. Just click where you would like to make the cut-off between the partial post for the homepage, and the rest of the page, then click the More button, see below screenshot.
wordpress more button to show post excerpt
If you prefer to edit a WordPress post with the HTML /code editor, you can simply click the ‘more’ button to enter the more tag, see below figure.
wordpress more tag to show post excerpt

Use WordPress Post Excerpts Function to Display Only Summary of Posts

To use the WP post excerpts function, you will need to edit your WP theme. From the WP Dashboard, go to Appearance >> Editor, find the home.php/index.php and category.php if you have them, then replace the following line:

<?php the_content('Read the rest of this entry »'); ?>

with: <?php the_excerpt(); ?>

Now, save the change and try to reload your WordPress home page or categories, you will find it display only posts excerpts or summaries other than full text or content.