Since the GraphQL was introduced in 2015 by Facebook, it's popularity is continuously growing. If you want to learn the GraphQL here is a list of the best tools, extensions, and tutorials to start with.

Knowlege base

1. GrapQL Official Documentation is definitely the best place to start your GraphQL adventure.
2. Official Facebook Draft RFC Specification is a place to go if you are looking for raw knowledge regarding GraphQL project.
3. GraphQL Weekly is a newsletter with news, articles, and everything related to GraphQL
4. How to GraphQL is a website which will take you into a journey from GraphQL newbie to releasing your first GraphQL project.
5. Explore-tech.org is a helpful resource for collecting GraphQL tools, especially libraries.
6. Learn.hasura.io - The 2-hour GraphQL Tutorial series for frontend developers made by Hasura Team

Tools & Extensions

1. GraphQL Docs is a simple way of generating static documentation for a GraphQL schema in seconds.
2. GraphCMS a tool that allows you to define the GraphQL API. Create structures, relationships, powerful permissions and manage your content with ease, generally speaking, build a hosted GraphQL back-end for your web project along with tools to manage its content.
3. GraphQL Editor makes it easier to understand the GraphQL schema. Create it by combining visual blocks and the editor will transform them into code! Features like loading schema from URL/file or a fake backend data can speed up the prototyping of your app.
4. Apollo Launchpad allows you to write a GraphQL schema in JavaScript making GraphQL code very accessible.
5. GraphiQL is a simple IDE tool for testing and documenting GraphQL APIs with a nice graphical interface.
6. GraphQL Playground a GraphiQL alternative.
7. Apollo Elements a library for building GraphQL-backed UIs without UI frameworks.
8. Altair - a GraphiQL alternative

Blogs

1. https://blog.apollographql.com/
2. https://www.robinwieruch.de/
3. https://graphqlmastery.com/blog
4. https://blog.graphqleditor.com/
5. https://graphql.org/blog/
6. https://blog.hasura.io/tagged/graphql/

Video tutorials

1. How to build a GraphQL Server

Communities

1. https://www.reddit.com/r/graphql
2. ReactiFlux Discord (#graphql)
3. spectrum.chat/apollo

Let's build this directory together! If you know any useful tools, tutorials, blogs for GraphQL post in comments and I will update list!
If you're looking for best GraphQL tutorials also check this post.