really is a question for the WP Show Posts forum. But it’s quite simple.
Dashboard > WP Show Posts > Add New list.
The settings allow you to define the number of post to be displayed, the taxonomy which you would use to filter your posts, the columns to be displayed and the type of content i.e only Title and Featured image.
Once the list is created you will see it provides a shortcode – which you simply add to the part of your site you wish it to be displayed.
Documentation for each of the tabs is provided here: