It is often used to move files to and from Internet servers to your home computer. You would use FTP to transfer your webpages to your home directory on our server. However, most browsers don't allow you to upload files to servers, for that you need a real FTP program. There are many different FTP programs freely available. You can download FTP programs from our website for Windows or Macintosh platforms.
Binary transfers is for binary files, such as executable, graphic or compressed files.
If you use WS-FTP as your FTP program, check the AUTO box at the bottom of the program screen to have the software try and determine what method to use automatically. This does't seem like such a big deal, until you try to open this file again.