The RxPY source repository contains example notebooks.
The official ReactiveX website contains additional tutorials and documentation:
Several commercial contents have their associated example code available freely:
RxPY 3.0.0 has removed support for backpressure here are the known community projects supporting backpressure:
O'Reilly Video
O’Reilly has published the video Reactive Python for Data Science which is available on both the O'Reilly Store as well as O'Reilly Safari. This video teaches RxPY from scratch with applications towards data science, but should be helpful for anyone seeking to learn RxPY and reactive programming.
Packt Video
Packt has published the video Reactive Programming in Python, available on Packt store. This video teaches how to write reactive GUI and network applications.