If APIs are eating the world, creating API documentation that is informative, succinct, and easy to read is crucial for making your API easy to understand and use. Consistent design decisions, documenting from a user's perspective, avoiding prominent URIs, writing in a suitable format, generating examples automatically, planning for the future, and considering the limitations of tools are key tips provided by Andy Wilkinson, Spring IO Platform lead at Pivotal, to help create RESTful API documentation that users will love. By following these guidelines, developers can ensure their APIs are easy to use and maintain, ultimately driving the adoption of their great ideas worldwide.