To start working with the EAC GraphQL API, there are a few things you will need.

1. Environments : Practical information about the production and non-production environments.
2. Authentication : Understand the authentication mechanism of the EAC API, how to get your credentials and how to use them.
3. Development and testing tools : A few tips for developers.
4. Market design and terminology : Make sure to understand the EAC market design and its concepts to learn how to use its API.

Once you are set up, we will jump into some practical examples to guide you through the EAC GraphQL API capabilities.

---