The easiest way to transfer files to and from your CentOS VPS
is using SFTP
This runs over SSH
and is available to be used by default with no configuration changes needed on your VPS.
It will work with your root user or any other user you create.
A free SFTP and FTP
client that works well is WinSCP
which can be downloaded from WinSCP.NET
It's easy to use and its configuration will work by default.
Once installed, start WinSCP and enter the hostname or IP address.
Enter the FTP login username and password now or later. Next click Login.
You may be prompted to accept the hosts key the first time you connect. This is expected.
Once connected you can drag and drop files.