As I haven't seen it mentioned: a couple of the Lazy DM resources are available freely as part of The Lazy GM's Resource Document [1].

The articles on Sly Flourish [2] are also generally quite interesting and useful.

[1] https://slyflourish.com/...
[2] https://slyflourish.com/archive.html

@Apex I must say I'm pretty impressed with #MothershipRPG's Warden's Operation Manual. Much of it isn't specific to Mothership and it contains solid and specific advice for most things I'd consider important for a #GM. #ttrpg