In this beginner-friendly tutorial, we dive into the fundamentals of Unreal Engine 5 (UE 5.2.1) Niagara VFX! 
Learn how to navigate Niagara from an empty project, understand the core differences between a Niagara System and an Emitter, and see how parent-child emitter workflows operate inside UE5.
https://dev.epicgames.com/community/learning/tutorials/ryoW7/unreal-engine-introduction-to-ue5-niagara-basics-part-1