docs: add lesson template and quick-start contribution guide

- Add zh/TEMPLATE.md as a starter scaffold for new lesson authors
- Add "Your First Contribution in 5 Minutes" section to CONTRIBUTING.md
  to lower the barrier for first-time contributors

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: beihaili

CONTRIBUTING.md

@@ -2,6 +2,18 @@
 
 # 贡献指南
 
+## Your First Contribution in 5 Minutes
+
+1. **Fork** this repository
+2. **Find an issue** labeled `good first issue` in [Issues](https://github.com/beihaili/Get-Started-with-Web3/issues)
+3. **Clone** your fork: `git clone https://github.com/YOUR_USERNAME/Get-Started-with-Web3.git`
+4. **Create a branch**: `git checkout -b fix/your-change`
+5. **Make your change** (fix a typo, improve a translation, add a quiz question)
+6. **Commit**: `git commit -m "fix: describe your change"`
+7. **Push and open a PR**: `git push origin fix/your-change`
+
+Not sure where to start? Translation proofreading is the easiest way to contribute — just find a file in `en/` and improve the English!
+
 感谢你对 **Get Started with Web3** 项目的关注！我们欢迎所有形式的贡献。
 
 ## 如何参与

zh/TEMPLATE.md

@@ -0,0 +1,35 @@
+# [Lesson Title]
+
+![status](https://img.shields.io/badge/Status-Draft-yellow)
+![author](https://img.shields.io/badge/Author-YourName-blue)
+
+## Overview
+
+[1-2 sentence summary of what this lesson covers]
+
+## Prerequisites
+
+- [What the reader should know before this lesson]
+
+## Content
+
+[Main lesson content]
+
+### Section 1
+
+[Content with code examples, diagrams, etc.]
+
+### Section 2
+
+[More content]
+
+## Summary
+
+- [Key takeaway 1]
+- [Key takeaway 2]
+- [Key takeaway 3]
+
+## Further Reading
+
+- [Resource 1](https://example.com)
+- [Resource 2](https://example.com)