To upload files on websites, you need followings:

- Credentials of website (FTP user name and password)
- Internet connection
- a software.

What need to do is Input the credentials to software and wait a second to connect the software to server. Whicle it will conect, the Directory will be shown like www or wwwroot or httpdocs. open that website and upload the files. Now step by step is showing in Images.
We will upload the information with a software named "FileZila"