how to setup wordpress like w3schools and tutorialpoint

If you have a collection of posts that you want your viewers to read in a certain sequence, then you need the following navigational features:

You need a navigation menu in the side column, which lists all the posts in the correct order
The navigation menu should only be visible when a viewer is on a post that is part of the series
There needs to be a “Previous” and “Next” links at the bottom of each post that allows the viewer to visit adjacent posts in the series.
The current post that a viewer is reading should appear as bold in the custom menu so that the viewer can where they are in the series

via Chebli Mohamed