FTP is short for file transfer protocol, meaning that it is a protocol for transferring files between computers. This is different from HTTP, which stands for HyperText Transfer Protocol--the protocol used to transfer Web pages to your computer. Most Web browsers can use both FTP and HTTP.
FTP is used to transfer files that are not viewable in your browser window. Software, for instance, is usually transferred via FTP, with the help of your browser, even though your browser can't "view" software. If you find an FTP link on the Web (which will look like any other link), simply click it to start the download. If you are given an FTP address, enter it in the Location box on the Location toolbar, then press Enter. If you are asked how you would like to handle the file, click Save To Disk. You will usually be prompted to choose where you want the file to be placed on your computer's hard drive.
You can also get special FTP software to transfer files from your computer to another computer and the other way around. FTP software allows you more control than browsers do when transferring files between computers. TUCOWS is a good place to get such software. (Please note that Business Internet Customer Support does not support problems with FTP software.)