I've set up a content model in Contentful and created the content type "dogToy" with fields like toyName, toyPhoto, puppyPhoto, estimatedPrice, and linkToBuy. I used GraphiQL to write my first GraphQL query and explore the schema of my Contentful space. I learned how to use transformations to resize images and how to fetch all dog toys using a different query field called "dogToyCollection". With this knowledge, I can now build powerful tools like GraphiQL and leverage my API's type system to control the data I get from my server.