This is the home of the Wiki space. This is the Page Tree:
If you cannot see a page tree above, wait. Still not? Contact Atlassian Hosted Studio Confluence support.
Or go to Browse > Pages on top, which offers a similar view (but it should really be on the homepage).
To help you on your way, we've inserted some of our favourite macros on this home page. As you start creating pages, blogging and commenting you'll see the macros below fill up with all the activity in your space.