Please follow the below video tutorial or the following steps to configure Blog Section

You can display your recent blog posts in this section of the home page. You must set up a blog page first.

• Go to Appearance >Customize>Home Page Settings> Blog Section
• Select a Page or Post. The Title and content of the selected page/post will be displayed as the title and description of the section. If you haven’t created a page for the blog, you need to set up a blog page first.
• Enter the View All button label
• Select the number of character of the excerpt of blog posts.
• Click Publish