You have the option in your blog to display the full blog post content or just an excerpt of the post with a read more link.
To display post excerpts and a read more link:
1. Navigate to “Appearance” > “Customize”
2. Select “Theme Settings” then select “Content Archives”
You can also click the checkbox to display a featured image at the top of each blog post.
Please note: In order for an image to appear, you will need to have a featured image selected for each post and tick the ‘display featured image’ box as shown.