I hope you find something in these suggestions that will help you quickly feel comfortable with Pyro.

My best wishes.

The general impression is that everyone learns differently, and "one size fits all" is not an option. So, I hope my suggestions help you grow and enable you to take another step to run on your full artistic potential.
I have been using Cinema 4D for 28 years, so I have had my fair share of learning, but it never stops; there is always something new to explore. This is the beauty of it; you might find something that no one has created so far. I hope you enjoy the ride. So, I'm happy you asked!

The easiest way would be to follow this link
https://cineversity.maxon.net/en/results?term=pyro

I would first suggest to use this series
https://cineversity.maxon.net/en/series/getting-started-with-cinema-4d-pyro?tutorial=getting-started-with-cinema-4d-pyro-creating-your-first-pyro-simulation

Then perhaps the Demystifying Post Production (DPP) series
https://cineversity.maxon.net/en/tutorials/demystifying-post-production-all-fired-up-1-3

Since I write in a forum, let me share this as a general note.
There is often the urge to jump instantly to the more advanced content, and I would say half of the artists who like to learn something new are more interested in an isolated project-based example.
There are two things to consider. The first one is that project-based tutorials are often less likely to provide broad knowledge, hence the project-specific definition.
Secondly, even if some knowledge is given, there might always be a little gap somewhere, and those work like little "Black Holes" that suck all energy into it. Here is the advantage of more structured learning series, one might know already a lot off it, but it completes the knowles even with the repetition a little bit faster.

Two main sentences drive (or not) everyone's progress.

The first is "I know that!" which often leads to a complete stop in learning. Then there is the idea of "What happens if…?" which leads to exploring and checking again. The ladder leads to savvy use of the tools—something I wish anyone could do. Here is the base to move into the "Flow" while creating. Hence, my two suggestions for two great series.

Enjoy

However, as you can see, we try to address many wishes and needs, but it will be always not a 100% fit. The more one knows, the harder it is to find something that is purely new information.