InDesign documents can contain a large number of pages that are either facing or non-facing.
Facing page documents are two or more pages next to each other, as in a book or magazine layout. Examples of non-facing page documents are a business card or flyer.
When you create a document (File > New), you set a document as facing or non-facing. You can change this setting later.
In the Properties panel and Pages panel (Window > Pages), you can view, navigate, add, and edit pages in the current document.
To navigate to a specific page, choose the page number in the Properties panel with no content selected or double-click the page thumbnail in the Pages panel.
In the Status bar below the document you can also navigate between the pages by choosing a page number.