Your Shopify store comes with a powerful built-in blogging engine. Blogs are great for content that you can update regularly. While many stores maintain only one, some feature multiple blogs to better categorize content.
The blog page provides users with an index of your blog posts. All your blog composition takes place in the Shopify admin, but when it comes to customizing how your blog page displays, that is controlled through the theme editor.
Edit blog page through the theme editor
To access the settings for these pages, navigate to your blog in the theme editor and then click Blog pages under the Sections tab.
How many posts per page
Use the provided slider to control the amount of blog posts displayed on this page.