WinSCP is a more secure way to upload files to sites hosted at Zorin. It works similar to FTP, however FTP does not encrypt passwords, so normally it is not open to the public. WinSCP can use the "SSH" protocol which encrypts everything.
WinSCP can be downloaded for free from here.
For more detailed information about Secure Shell Protocols (SSH) click
When WinSCP is started the first time, you should see a screen similar to this.
Once the information is entered, you can click the "Save" button if you expect you will need to use this tool again. Your settings will be saved under the "Stored sessions" at the top left.
The first time you log in you will see a warning about a "host key". This is saying that the fingerprint given by the server has not been seen before. You want to save this. You should not see this message again, unless the server or your system has been tampered with.
Once you are logged in you will see a screen like this showing the files on the remote server. A short cut link should be provided that will take you to where your web site files are stored as approporiate for your account.
To upload files to the server, be sure you are in the right place on the remote end. Then you can select File|Move which has an option for finding files on your computer to send.