Read how the guys at Apollo reimplemented parts of their UI for Meteor Galaxy using Apollo Client and GraphQL. An in-depth analysis of how Apollo Client helps reduce no-op UI re-renders and server rountrips follows.
A good resource to get more familiar with Relay! Become Relay lays out a path of resources and articles that you can follow on your way to Relay mastery. Try to combine it with Relay for Visual Learners if you feel stuck.
This project is a neat extension for graphql-js, allowing the creation of types and interfaces using the GraphQL syntax and includes resolvers and resolver decorators for common use cases. Includes specific Relay support as a bonus!