Incidentally, it's important to have only one set of duplicate files. If you create multiple sets, then conflicting revisions and unintended overwriting might result. The Office of Communications will provide the software that HWS uses to create and edit pages to someone in your office. At least one person in your office must have basic facility with the software, but many offices share editing chore, so multiple people are versed in use of the software. The Office of Communications will tutor you on use of the software.
Web editing software is easy, by the way.
Text editing is particularly simple. Visit the Website Account Request page to do this. If you use the webpage-editing software that the Office of Communications provides, the FTP function is built right in. If you are using a Mac, you will probably use the program Fetch, that serves the same function. Getting an FTP program set up right in the beginning can be a little tricky.