Homepage Slideshow: You can add and manage slides under the “Slides” tab in the main WordPress admin menu. Each slide will display the content of that slide and the featured image as a background. The recommended image size for the featured image is: 1300px x 700px. These are not exact image size requirements, so feel free to experiment with different dimensions.
Recent Posts: This section displays your recent posts. You can change the settings for this section under Customize→Gear Homepage→Recent Posts. The suggested size for the background image is 1300px x 700px. These are not exact image size requirements, so feel free to experiment with different dimensions.
Setting Up a Blog
If you’ve followed the steps above to set up your home page, you’ll probably want to display your posts on a different page. You can easily do this by creating a new page and giving it a name like “Blog”, “News”, or whatever you’d like to call it. After you publish your page, go to Settings → Reading. For “Front page displays”, choose your newly created “Blog” page for Posts page. Then save your settings.