From Jill:

If you want to do it the edit a post the super easy way, go to the Ryner Family blog & log in as Lori.  Find the post you want to edit & scroll down to the bottom of it.  You will see a little pencil.  Click on it, & BOOM! Just like magic, you'll find yourself editing the post (I just figured that out just now.  MAN, I FEEL DUMB!) There are other more complicated ways, but this should work for everybody.