gRPC has been talked about in many conferences and sessions. Here are a few interesting ones:
gRPC Intro - Jayant Kolhe, May 2018
gRPC Load Balancing on Kubernetes - Jan Tattermusch, May 2018
gRPC Deep Dive - Sree Kuchibhotla, May 2018
Modifying gRPC Services Over Time - Eric Anderson, Dec 2017
gRPC History Talk "A Journey to 10000 Stars on GitHub" - Jan Tattermusch, Oct 2017
Building microservices with gRPC and Kubernetes
Building a scalable Python gRPC service using kubernetes, 2015
Real time IOT with containers and gRPC
gRPC Talk at Gotham Go 2015
Building Microservices with gRPC and Kubernetes, 2016