site oficial: http://graphql.org/
Link uteis em PHP
https://github.com/webonyx/graphql-php
https://github.com/Folkloreatelier/laravel-graphql
Videos https://www.youtube.com/watch?v=E_pMgd8tm7Y
Laravel + graphql https://www.youtube.com/watch?v=KaxB8wPeTkI