L04 Contributing Guide

title: "Writing a Contributing Guide for Open Source Projects" weight: 4 description: "Learn to write contributing guides for open source: setup instructions, coding conventions, PR workflow, review process, and community guidelines that welcome new contributors." date: 2026-06-28 lastmod: 2026-06-28 tags: [technical-writing, open-source] }

A contributing guide lowers the barrier for new contributors by providing clear instructions on how to set up the project, follow conventions, submit changes, and participate in the community.

In this lesson, you will learn how to write a contributing guide that welcomes and supports new contributors.

What You'll Learn

You will learn contributing guide structure, essential sections, and how to lower barriers for first-time contributors.

Why It Matters

Without a contributing guide, potential contributors do not know where to start. A good guide converts visitors into active contributors.

def contributing_guide_template():
    """Return a recommended CONTRIBUTING.md structure."""
    return [
        "Welcome message and code of conduct reference",
        "Development setup instructions",
        "Coding conventions and style guide",
        "Pull request workflow",
        "Review process expectations",
        "Testing requirements",
        "Documentation requirements",
        "Communication channels",
    ]

Teacher Mindset

Think of the contributing guide as a welcome mat for your project. A worn, dirty mat says you are not prepared for guests. A clean, clear mat says: we are happy you are here.

Common Mistakes

1. Assuming Git Knowledge

Not everyone is a Git expert. Include step-by-step setup instructions.

2. No First-Time Contributor Path

List beginner-friendly issues. Tag them with good-first-issue.

3. Too Many Requirements

Strict requirements scare newcomers. Start with essentials. Add more for advanced contributions.

Practice Questions

1. What should a contributing guide include? Setup, conventions, PR workflow, review process, and communication channels.

2. How do you encourage first-time contributors? Tag beginner-friendly issues, provide mentorship, and celebrate first contributions.

3. Challenge: Write a contributing guide for a project you use or maintain.

FAQ

Mini Project

Audit a contributing guide from a popular open source project. Identify strengths and weaknesses. Propose improvements and submit as a pull request.

What's Next

Code of Conduct in the next lesson.