Editing a page via SmartFTP

Hi I am pretty new here and to using SmartFTP, so go easy!! :)
I am having trouble with loading and editing a page via SmartFTP. These are the instructions given to me but they don't make too much sense, help please?!?!

menu: File - Help - Request Support

I am on a trial atm. I would like to use the remaining 28 days and evaluate before buying licence.