The navigation menu appears on the left hand side of each page in your space. Once you've added several new pages, you'll want to edit the navigation menu to add and organize those pages.

Now might be a good time to visit the Sample eFolio site to see what the navigation menu looks like.

To edit the navigation menu, click the edit navigation link found at the bottom of the menu on the left-hand side.
This will open the navigation menu in a wikispaces page.
You can edit the navigation menu, the same way you edit a regular page.

Here's a screen shot of the editing page for this site's navigation menu. We used a bulleted list to indent the pages under the headings. Note that the bullets do not appear in the menu when it is saved.