Adding pages in Navigation

I am trying to add an about page to my repository, I've added a link to the navigation bar through the Appearance--Navigation tab. But when I go to view the public page I get the Error 404 code saying the page isn't available.

My question is how do I add information to this page? Or can I create an about page a different way?

The most common way of adding an About page is as a Simple Page, and adding that in the navigation. Assuming that's what you did (let me know if that's not correct), my first guess is that the page hasn't been made public.

I figured it out, thanks!!