FTP is the File Transfer Protocol, and is the Internet method for the bulk-uploading and downloading of files. There are many pieces of software (see below) which will enable you to upload and download, but the essential information that you will have to give the software is:
If you use Microsoft Windows, you can use Windows Explorer for this:
If you have a different operating system, you may be able to use its native FTP program to achieve the same effect.
FileZilla is a program which runs on your computer to enable you to make FTP transfers (FTP = File Transfer Protocol). When you have installed it, it works in a similar manner to Windows Explorer (see above).
If you have a smartphone, you won't be able to use FileZilla, but there will some other FTP program you can use. Just look on the Web.
Caution: You will not be able to use the print button unless you enable JavaScript on your browser.
Caution: You will not be able to see the menu unless you enable JavaScript on your browser.