---
title: "3. Write your graph's resolvers"
description: Start here for the Apollo fullstack tutorial
---

<h2 id="data-sources">Call your data sources in resolvers</h2>

<h2 id="write-query">Write a query in the playground</h2>

<h2 id="authentication">Authenticate users</h2>

<h2 id="testing">Test your graph</h2>