Gnome Stew discusses default/passive initiative, and how to use it to streamline both the first turn of combat and actions outside of combat.
Keeping players engaged in a dungeon exploration can be difficult beyond its basic premise: they are knocking down a series of doors in an impossibly deep and large underground facility. Gnome Stew discusses some simple ways to keep your enemies engaging.
For long-running campaigns, quite a few GMs will provide a document that ranges from one page to several pages to set the stage for the players. Gnome Stew talks about how to prepare similar documents for one-shots in a useful, easily-consumable way.
Gnome Stew goes in-depth on how to engage players as pseudo-DMs in your own games, giving them more creative freedom and input and reducing the load on yourself.