Gatsby theme blog is a great theme for adding blog functionality to your site.
This recipe:
Installs necessary NPM packages.
Installs the gatsby-theme-blog plugin in gatsby-config.js and makes use of the basePath configuration so the blog listing appears at /blog.
<GatsbyPlugin name="gatsby-theme-blog" options={{ basePath: /blog }} />
Adds a post.
When you've finished installing the recipe, run gatsby develop and check out http://localhost:8000/blog for the list of posts.
Example content is available at http://localhost:8000/blog/first-blog.