Tutorial 1: Spaces and Pages
The main Dashboard page shows the Spaces to which you have access and the recent activity in those Spaces.
A Space is a restricted zone where only certain users have access Permissions. Access may be just to View through to full Create/Edit/Delete
A Page within the Space can be on any topic. Child pages can be added to any page using the Add facility at the top right. This creates a tree hierarchy like a drill down directory as indeed this page is a Child page and has Child pages of its own (see left hand panel). You can navigate the pages using the left hand panel or the 'snail trail' on the top blue bar right back to the Dashboard. Your Space Permissions will result in showing or hiding the Edit and Add facilities on the top corner of each page.