How can you add additional text to a free geocities website once it is set up?

I recently set up a website, www.geocities.com/greawich/countryside.h… I put in some basic info to start with the intention of going back and adding to it. I have spent many hours now trying to figure out how to add more text, information, blog, etc. to it with no success. I read all the info on geocities home page with no help in adding it.