Boot Loader Interface, Discoverable Partitions Specification, etc.
I’m sure the implementation details are very interesting.
But where is the “Configure and Start a Service” option? Which is arguably the most important.
For a quick intro to new services, see the examples here: https://www.freedesktop.org/software/systemd/man/systemd.ser... (they should cover most basic needs) then read above for the details on the parameters. You stick the file in /etc/systemd/system/your_thing.service and enable/start it.
No, it's not as easy as "man systemd.service".
What's probably most useful in that documentation is the "hello world" example, which is buried at the bottom of the documentation. Also, key details are elsewhere, in "man systemd.exec" and "man systemd.unit".
The systemd docs a great comprehensive reference, but the man pages are poor introductory documentation.
Some useful tips that are hard to find:
* man systemd.directives documents every directory and will tell you which man page as the full documentation for it.
* man systemd.index lists every man page related to systemd.