If you want to create a set of structured content rather than unrelated single pages, you can enable the Book module. This is ideal when creating a user guide where each page links to the next and content may be formed into chapters.

Enable the Book module now.

When you enable the Book module, a new content type Book page becomes available on the Add content screen.

As an example of how to use this module, let's digress a little from the My Drupal agency site build for a moment, and look at how this chapter could be created as a Drupal book.

To start with, we will create a new Book page called Learning Drupal 8. From the Add content screen, click on Book page.

On the right-hand side, there is a new expandable section, BOOK OUTLINE.

When you expand this item, you can add a new page to a specific place in the book structure. As this is the first book page we are creating, we can select Create a new book, fill in the Title field with Learning Drupal 8, and then Save and publish the page as normal...