Start the application and click Open Connection. In the new window enter the following details: Server: here you should type your domain name or the name of the server that hosts your account (e.g. siteground200.com)
Username: here you should type your FTP username (e.g. email@example.com)
Password: here you should type your FTP password (the password for firstname.lastname@example.org)
If you are connecting using Cyberduck for the first time on any given computer, you will encounter the below security warning. Select the 'Always' button to avoid seeing the message in the future.
And now you'll connect to your FTP server. The window may be blank or empty if you've never uploaded any files or folders.
To upload files, locate them in your Finder, select the ones you want to upload, and then drag them to the main CyberDuck window.
Once the upload has completed, the window will refresh and your files will be listed.