how to make visual effects for ue4 games ?

so i want to learn visual effects or however they r called , and i searched over and over and there seem to be no tutorials out there not even paid ones , so how or where to learn that ?

There is some stuff out there:
https://www.youtube.com/results?search_query=ue4+cascade

But! We’re getting Niagara (early access, most likely) in 4.20 (any day now) so there will be new and modern ways of creating sfx.

Programmable VFX with Unreal Engine’s Niagara | GDC 2018 | Unreal Engine