Add a Basic page
To create a new page in Drupal 8, go to the top left of the page, in the administrative toolbar, and hover over the Content button, then Add Content, then Basic Page located within the administrative toolbar at the top left of the page.
You will be redirected to a new page that looks like this:
There are two ways to begin adding content.
You can start with the Top Banner section, where you can add a Banner with overlay text to the top of the page, below the header and navigation and above the page title.
Or, you can decide your page does not need a Top Banner yet, and you can begin adding Paragraphs to your rows of content by clicking one of the Paragraph types on the right ( Text Area, Image/Media, Card, Banner) of the Paragraphs widget, and dragging it into the first row on the left.