Or start from here:
https://www.howtoforge.com/how-to-se...h-ubuntu-10.04
modifying for the various strangenesses of the Kindle and whatever your
hosing hosting Calibre on.
- - - -
PS: Using the already supported sshfs is probably the better idea (tm).
Note: FileZilla "just works" with the ssh bundled in the USBnetworking package (which includes ssh server for both USB cable and WiFi).
https://filezilla-project.org/index.php
(sshfs is one of the tricks it does easily.)