I hate to be this guy but the man pages have it all man -k systemd There's some terminology to learn, but overall it's pretty approachable. Edit; and as fa

I hate to be this guy but the man pages have it all man -k systemd There's some terminology to learn, but overall it's pretty approachable. Edit; and as far as architecture goes they are all _separate_ programs. It's not a single large "systemd"