---
title: Introduction
description: 'Learn how to manage users in SuperTokens '
sidebar:
  order: 1
---

## Overview

<PaidFeatureCallout />

Account linking is the process of associating multiple authentication methods with the same account.
For example, a user may have a password-based account and a Google account. They may want to link both of these accounts to the same user account in your application.

Account linking can occur either automatically or manually.
The first method happens during user sign up.
If a user signs up with a second login method with the same email or phone, the two accounts are automatically linked.
The other one involves you setting up the linking process yourself.

## Getting started

Before you going into the tutorials, read through the **Important concepts** page.
It teaches you about the main things that you need to know in the context of account linking.
After that, based on your use case, check either the automatic or manual account linking guides.

<CardGroup cols={3}>
  <Card title="Important concepts" href="/post-authentication/account-linking/important-concepts">
Learn about the main concepts that you need to know in the context of account linking.
</Card>
  <Card title="Automatic account linking" href="/post-authentication/account-linking/automatic-account-linking">
See how to enable and use the automatic account linking feature.
</Card>
  <Card title="Manual account linking" href="/post-authentication/account-linking/manual-account-linking">
Implement the account linking feature manually.
</Card>
</CardGroup>

## Customization 


<CardGroup cols={3}>
  <Card title="Link social accounts" href="/post-authentication/account-linking/link-social-accounts">
See how you can manually link multiple social accounts under the same user.
</Card>
  <Card title="Add passwords to an existing account" href="/post-authentication/account-linking/add-passwords-to-an-existing-account">
See how you can add passwords to an existing account.
</Card>
</CardGroup>