Displaying a Post using Shortcode

There is a technique for displaying, and quickly changing, individual Posts using Shortcode.

Shortcode in WordPress Help

Insert a Shortcode Block and Paste or type the above code.
Replace the highlighted Post number with the number of the Post you want to see.
Replace again to change the Post displayed.

This is an Image. You will have to type and save this somewhere for pasting.

Find the 5-number unique identifier of the blog post you want to use

While displaying the Posts page in the My Site desktop,
hover over the blog post in the list you want to be on the front page.

In the bottom-left corner of the window, the address of that blog will display. The last five digits of the address are the unique identifier of that blog post. Write it down.
Use this number in the Shortcode.