First of all, what is a "page"?
A page is an element of your site that allows you to present informative content to your customers.
This could be your terms and conditions (mandatory), your contact details, an "about us" page...
The free offer allows you to create 1 page. No limit for paid subscriptions.
How does it work?
Go to "Content", a list containing your created pages will appear. You can then create a new page, edit one, or delete a page (except for the "legal notices").
The page editor
By clicking on "Show details", you will have access to:
The page URL (its address)
Its display order in the menus: the higher the number, the higher the page appears in the menus
The display location: top of the page, bottom of the page, or both
Publication: should the page be published or not