|The Gleeful Grognard|
There isn't a scenario in the crb.
The bestiary is nice imo. Buuutttt you can head over to the 2e archives of nethys and get everything you need monster wise.
(Npcs have to be built with character creation rules or reskinned bestiary creatures atm)
The easy actions tree site will also prove to be invaluable imo.
If you want to run a premade adventure
This is a good oneshot
However if you want something a bit longer running hellknight hill is a good starting point. Some people have complained that it is a bit mundane, but by the time the second volume of the path rolls around that changes (cult of cinders is a fun book imo)
Plaguestone, mechanically it works but I found the story beats irritating, which for me is worse than being vanilla.
I would also buy the gm screen and the combat tracker. The gm screen in particular is surprisingly well made, they focused on making it legible over stylistic and even included page reference numbers.
The combat tracker is a set of printed markable magnets and premarked whiteboard. It is a nice addition