I have editted the About Me page in the past, but I can't find how to edit it now. Does anyone know how to get to the About Me page to edit it?

Click on your "ME" page icon.
Down at the bottom it will say: To create your own About Me page, click here.
Once you click that it will ask for your password then it will take you to a page that has a button at the bottom left that says "edit your page".

There you go! :-)