From your Shopify admin, go to Online Store > Themes.
Find the theme that you want to edit and click Customize.
From the top-bar drop-down menu, select Blog posts.
Show featured image: show/hide the featured image of the post.
Show author: show/hide the author name of the post.
Show date: show/hide the published date of the post.
Show social sharing buttons: show/hide buttons that are used to share the post.
Enable: show/hide the sidebar.
Show recent posts: show/hide the recent post block.
The recent posts limit: limit the number of recent posts.
Show filter tags: show/hide the tags block.