Related Content requires the Jetpack plugin.
Displaying content related to the current blog post is a great way to encourage your visitors to view more pages on your website.
Related Content requires the Jetpack plugin to be installed and Activated. Once activated go to the Jetpack settings and enable the Related Content module. You can then go to the Related posts settings which can be found in the WP Admin → Settings → Reading menu.
We'd love to get some feedback to help us create better themes.