Hey y'all, once again, another awesome meetup last night.  Following up on Vivek's discussion about the event bus, here's the link to the Play-by-Play on Pluralsight I had mentioned covering an explanation of how the EMP works.  I found it really helpful.  

https://app.pluralsight.com/library/courses/play-by-play-event-based-architecture-salesforce-platform-events/exercise-files

Enjoy!