When I’ve used the [display post] feature of wordpress, I sometimes need to find an id number for a particular post. There are two quick, easy ways to find the post id:
1. If you’re logged into your WordPress dashboard, click Posts > All Posts. Find the post you need and hover or roll your mouse over the title. The post id number will appear in the progress bar in the bottom left of the browser.
2. If you are editing a post, it’s displayed in the URL.
Hope this was helpful!