docs: update contributing guides, and workflows

docs/README.md

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+<table>
+    <tr>
+        <td> Read these guidelines in </td>
+        <td><a href="/CONTRIBUTING.md"> English </a></td>
+        <td><a href="/docs/chinese/README.md"> 中文 </a></td>
+        <td><a href="/docs/russian/README.md"> русский </a></td>
+        <td><a href="/docs/arabic/README.md"> عربى </a></td>
+        <td><a href="/docs/spanish/README.md"> Español </a></td>
+        <td><a href="/docs/portuguese/README.md"> Português </a></td>
+    </tr>
+</table>
+
+# Documentation
+
+Hello 👋!
+
+This directory contains all of the documentation on contributing to freeCodeCamp.org
+
+## [If you are getting started, start by reading this first.](/CONTRIBUTING.md)
+
+---
+
+## Quick references articles
+
+1. How to work on Guide articles.
+2. How to work on Curriculum Challenges.
+3. How to setup freeCodeCamp locally.
+4. How to catch outgoing emails locally.
+
+## Style guides
+
+1. Style guide for creating guide articles.
+2. Style guide for creating curriculum challenges.
+
+## Quick commands reference when working locally
+
+A quick reference to the commands that you will need, when working locally.
+
+| command | description |
+| ------- | ----------- |
+| `npm run bootstrap` | Bootstraps the different services |
+| `npm run seed` | Parse all the challenge markdown files and inserts them into MongoDB. |
+| `npm run develop` | Starts the freeCodeCamp API Server and Client Apps |
+| `npm test` |  Run all JS tests in the system, including client, server, lint and challenge tests |
+| `npm run test:client` | Run the client test suite |
+| `npm run test:curriculum` | Run the curriculum test suite |
+| `npm run test:server` | Run the server test suite |
+| `npm run commit` | An interactive tool to help you build a good commit message |