Filezilla is an FTP (File Transfer Protocol) where you can upload multiple webpages to a particular site, you will need details on the host, username and password options. The host for example always start of with ftp (ftp.minimise.org) for instance.
This is my folder (stevenserver) where all files are uploaded. You have to open up your personal file before copying in a page.
Here is a simple page that I created in Coda, all of this code is HTML which found below has no CSS to link too.
|<title>My first webpage</title>|
|<h1>A list of woodland animals</h1>|