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

# The Data City Knowledge Base

> Help, methodology and how-tos for The Data City platform - RTICs, Industry Engine, our data sources and more.

<Note>
  **Looking for `help.thedatacity.com`?** You're in the right place. The knowledge base has moved here.
</Note>

## Start here

<Columns cols={2}>
  <Card title="Getting started" icon="rocket" href="/getting-started-with-the-data-city">
    A guided walkthrough of Industry Engine - list builder, EXPLORE, ANALYSE and RTICs.
  </Card>

  <Card title="What is The Data City?" icon="circle-info" href="/about/what-is-the-data-city">
    A short primer on what the platform is and the problems it solves.
  </Card>
</Columns>

## Browse the knowledge base

<Columns cols={2}>
  <Card title="Our data" icon="database" href="/our-data/rtics/what-are-rtics">
    RTICs, key data definitions, proprietary metrics, and third-party data sources.
  </Card>

  <Card title="Using Industry Engine" icon="telescope" href="/using-industry-engine/tools/explore">
    EXPLORE, ANALYSE, COMPARE, Smart Search, Smart lists, filters, downloads and API access.
  </Card>

  <Card title="FAQs" icon="circle-question" href="/faqs/machine-learning-classification-technique">
    Common questions about classifications, locations, similar companies and more.
  </Card>

  <Card title="Tender materials" icon="file-contract" href="/tender/the-data-city-tender-materials">
    Information to support tenders that use The Data City data and platform.
  </Card>
</Columns>

## Popular topics

<CardGroup cols={3}>
  <Card title="What are RTICs?" icon="layer-group" href="/our-data/rtics/what-are-rtics" />

  <Card title="How we build RTICs" icon="wrench" href="/our-data/rtics/how-do-we-build-rtics" />

  <Card title="RTICs vs. SIC codes" icon="code-compare" href="/our-data/rtics/what-is-the-difference-between-rtics-sic-codes" />

  <Card title="Using filters" icon="filter" href="/using-industry-engine/features/using-filters" />

  <Card title="Downloading data" icon="download" href="/using-industry-engine/features/downloading-data" />

  <Card title="API access" icon="plug" href="/using-industry-engine/features/api" />

  <Card title="Glossary / Data Dictionary" icon="book" href="/data-dictionary" />

  <Card title="Using our data safely" icon="shield-halved" href="/our-data/using-our-data/using-our-data-safely" />

  <Card title="Smart Search" icon="wand-magic-sparkles" href="/using-industry-engine/tools/smart-search" />
</CardGroup>

## Need more help?

<Card title="Talk to us" icon="comment" horizontal href="https://thedatacity.com/contact-us/">
  Reach the team for product questions, demos, or to give feedback.
</Card>