Your Blog contains a few options within it's section settings allowing you to edit the appearance and choose which content will be shown.
Image - This will add a full width image to the top of your blog page.
We recommend working with an image of 1920px wide x 500px tall, going taller is possible however the taller the image the further down your content will be pushed.
Text - Add some text to give your blog a description, helpful for SEO and also an introduction for your blog posts.
Show blog posts as tiles - This will re-format the layout of your blog from a standard "stacked" ( one on top of the other ) to a tiled view that will display each blog post preview in a 3 per row grid.
Show published data - Enables / disables visibility of the date that the post was published in your store
Show author - By default the person logged into your Shopify account and writing the blog post will be credited as the author of that post. Toggle this checkbox to show or hide blog post authors.
Show social icons - When you are not using the tiled view this simply adds a sidebar that contains links to your social media accounts.