Beginner

Chris has put out quite a few tutorials that are easy to follow.  

 

This is a tutorial from 2.7, but the ideas should work with shaders in 2.9.  Very nice style

Intermediate

This is one of the most in depth tutorials I've seen on explosions.  He has references, and goes over the different force modifiers that effect the shape and animation of the smoke and fire.  He also includes a lot of explanation which is very helpful.

 

He shows you how to set up the anime cel shader on a simple object, then he goes over how to use the shader in a scene, (Evangelian - his link in Youtube has the free Evangelian object.)  He then shows you how to sort of have the smoke dissipate.  I think you can parent all the smoke to an empty, and shrink the empty in the y axis, as you use the color ramp as he describes.

 

 

 

 

Advanced