Foo Fighters 'Dear Rosemary' intro

Hi all,

I'm trying to understand whether this notation is right and what is the best approach to learning and practicing this in order to nail this down. I'd appreciate your advice on how to best think of this...

Thanks!

https://www.drumeo.com/beat/taylor-hawkins-best-drum-parts-notation/?srsltid=AfmBOoqR4msnVh0sEWD-6lwhY2VYd0d90ASK3dmQeriaimZejdX2kfOZ#dear-rosemary-foo-fighters