You’ll find this post in your
content/blog directory. Go ahead and edit it and re-build the site to see your changes. You can rebuild the site in many different ways, but the most common way is to run
gatsby develop, which launches a web server and auto-regenerates your site when a file is updated.
To add new posts, simply add a file in the
content/blog directory. Take a look at the source for this post to get an idea about how it works.
There's support for code snippets:
Check out the Gatsby docs for more info on how to get the most out of Gatsby.