PAGES ARE DOCUMENTS, and lives in Layouts.
To make a new Page, simply choose a template from the Page Picker in any Layout: it will be published immediately - right where you create it.
CHANGE THE PAGE TITLE by clicking it in the File Manager. Double-click to edit the URL [filename] instead of the Title.
ADD KEYWORDS below the title.
CREATE CONTENT by clicking the Text Tool [the pencil] to activate the Editor [you can click directly on any existing text, too]. The tool will also show image thumbnails - clicking one will drop the image into your text.
UPLOAD ATTACHMENTS by clicking the Upload icon [the Up Arrow], or by dropping files on the blue Page Icon.
UNPUBLISH / PUBLISH THE PAGE by clicking More Actions [the cogwheel], then the Unpublish action. Only an Owner can see an Unpublished page.