Fake-3D! - Sprite Stacking GMS2 Tutorial
This is a tutorial for Game Maker Studio 2, it'll teach you how to fake 3D using 2D images, and how that can be applied to an RPG/top down game.
This creates a unique style that isn't used in many games, and because it's pseudo 3D, the rest of the game can be coded as if it was a regular 2D RPG.