Carla Schroder -- More on Systemd

[GreyGeek]

Her intro:
https://www.linux.com/learn/here-we-...-intro-systemd
Her main points:
https://www.linux.com/learn/understa...-using-systemd
Using systemd runlevels and service management commands:
https://www.linux.com/learn/intro-sy...ement-commands

And, as a bonus, the nitty gritty from systemd's homepage:
https://www.freedesktop.org/wiki/Software/systemd/
and an interesting and informative page on systemd from the Wikipedia:
https://en.wikipedia.org/wiki/Systemd