Why using FTP is important
FTP (File Transfer Protocol) is the easiest way to transfer files between your computer and your web hosting provider. There are occasions when you can break your website (and even lock you out from the admin panel) via incompatible plugins, buggy themes, accidental errors when editing the functions.php file. Also, using the built-in theme editor is error-prone. Using FTP can easily get you out of trouble in a matter of minutes.
|From now on, in our examples we will be using the free, worldwide popular ftp client Filezilla. Download and install it from this address - Filezilla website