Calibre content server can either be enabled from within the calibre GUI, or can be launched via command line. See
https://manual.calibre-ebook.com/gen...re-server.html
For calibre-web often the easiest approach is to install using Docker where the docker container will contain all the required levels / versions of software. Now I have no idea whether a pi-zero can run docker!
Sent from my Pixel 7a using Tapatalk