Hi my blog is curvaceous.world, I like to know how can we enable the related post function, such that when visitors finish reading one, related post are recommended.
I hope you are well today and thank you for your question.
You display it by using Jetpack plugin and its related posts module as described here Related Posts
Jetpack appears to be for wordpress.com, I am using .org.
Any other plugin you recommend?
It will be nice if I could make it like the demo site:
Where related post are displayed. I would like to have it with extract of article too.
Yes on our demo site we use Jetpack related posts module.
It is not just for WP.com but also for WP.org and you can get it from here Jetpack – WP Security, Backup, Speed, & Growth – WordPress plugin | WordPress.org