Setting /Wiki as a Wiki Dashboard *or* Wiki itself

Hi! I installed the Wiki at http://hackidemia.com/beta .

Right now, when I visit http://hackidemia.com/beta/wiki , nothing is there.

If I start a new wiki - like http://www.hackidemia.com/beta/wiki/testing-one-two-testing - It shows up. Is there a way to set http://hackidemia.com/beta/wiki to display a wiki?

And if not that, is there a way to set this up as a dynamic wiki listing / dashboard for users?