hi JH
1. Download a plugin under Plugins → Add New that allows adding custom links to posts or redirecting posts. One such plugin is “Page Links To” however please do your own research to determine the best plugin for you. WordPress SEO also works for this purpose.
2. Create a page called “Home” and add the link to your post wherever your plugin allows. For Page Links To, the field is at the bottom of the post.
3. Click Publish
4. Go to Settings → Reading and select Static page, then select the Home page in the Home Page menu.
5. Leave the Blog option blank and continue to use categories in your menu for displaying standard post lists
