Your UNIX hosting account has a home directory in which you store your site content. When you log into your account using FTP you will be placed within your home directory. You should upload the pages, images and files that make up your site to this directory.

cgi-bin
Within your home directory is a folder called 'cgi-bin'. This folder is used for storing any CGI Scripts you wish to use on your account.

Path To Your Home Directory
You may need to reference the path to your home directory in your scripts. The full path to your home directory is:

/home/d/e/demo_user/public_html