# What is GraphQL Start

In this **tutorial** you will learn:

* How to organize your GraphQL API project
* How to implement queries, mutations, and subscriptions
* How to optimize API performance by using batching and caching
* How to handle authentication and authorization
* How to validate users' permissions and restrict access to the content
* How to deploy your API into the cloud using serverless infrastructure

{% hint style="info" %}
You need to be familiar with at least the basic concepts of **Node.js** and **JavaScript**.
{% endhint %}

{% content-ref url="getting-started" %}
[getting-started](https://graphqlstart.com/getting-started)
{% endcontent-ref %}

{% embed url="<https://www.youtube.com/watch?v=783ccP__No8>" %}


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# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://graphqlstart.com/readme.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.