L
Very easy. All you have to do is hit edit "edit this page".
You will then be taken to page that will contain the text.
You can then edit it.
Note the page will loo a little different to the "article" page. There is some simple code embeded into the page - i.e. tell the page where images can be found.
Have a tweak and you'll get the hand of it.
You could start/edit a captain pugwash page!!
Mike