Dive into a comprehensive crash course on modern GraphQL, covering essential concepts from basic setup to advanced data operations. Learn to set up a GraphQL server, work with scalar types, arrays, and object types, and master queries with variables. Explore data relationships, directory organization, and context parameters. Delve into filtering data logic and mutations, including adding, deleting, and updating data. Gain practical skills through hands-on examples and real-world applications in this intensive 3.5-hour tutorial designed for developers looking to enhance their GraphQL proficiency.