> ## Documentation Index
> Fetch the complete documentation index at: https://docs.teal.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# Overview

> Explore our guides, API reference, and changelog

## Build with Teal

Get started by familiarizing yourself with the Teal API

<CardGroup cols={2}>
  <Card title="Initial setup" icon="gear" href="/guides/introduction/initial_setup">
    Start using the Teal API
  </Card>

  <Card title="Quickstart" icon="bolt" href="/guides/introduction/quickstart_guide">
    Build a cash flow report
  </Card>
</CardGroup>

***

## Learn about Teal

Learn the fundamentals of Teal and understand what you can build for your customers

<CardGroup cols={3}>
  <Card title="Use cases" icon="house" href="/guides/introduction/about_teal">
    Understand what you can build with Teal
  </Card>

  <Card title="Core concepts" icon="book" href="/guides/introduction/core_concepts">
    Learn general accounting and Teal specific terms
  </Card>

  <Card title="Changelog" icon="pen" href="https://teal.dev/changelog">
    See what's changed
  </Card>
</CardGroup>

***

## Explore our API reference

<CardGroup cols={2}>
  <Card title="Authentication" icon="lock-keyhole-open" href="/api-reference/api-design/authentication" />

  <Card title="Create a Platform categorization rule" icon="arrow-progress" href="/api-reference/categorization/create-a-platform-rule" />
</CardGroup>