a sample Drupal 8 module interact with Drupal core.
To add 'Sample Block' you can go to Structure -> Block Layout (admin/structure/block) and click on 'Place Block' button associated with each available region.
goto "admin/structure/views" to add a new view, select "Create a page", then in the "PAGE DISPLAY SETTINGS" tab select "PAGE DISPLAY SETTINGS" as "Business Card"