Connecting SFTP Public Keys for Authentication

https://winscp.net/eng/docs/public_key#private

Run SFTP Client on your computer as normal. Using Public Keys for Authentication, you don’t need to use password any more. Enter server Hostname, username, then click on “Advanced” button. Then add the PrivateKey file using SSH=>Authentication. Please Save and login to SFTP.

Once you’re on GC, please look for /var/www/html/. By default, it’ll redirect you to /home/YourUserName/ directory.