Documentation/Guide request for beginners to understand project file structure

Hello htop Maintainers and Community,

I am a beginner developer currently studying programming fundamentals in C (up to functions). I would like to explore the htop codebase to learn from a real-world project.

Could you please provide or direct me to any documentation, architecture guides, or explanations that break down:

The main project directory and file structure (what each .c and .h file is responsible for).

How the core functions and modules connect with each other.

Any beginner-friendly documentation or developer setup guide for first-time contributors.

Any recommended reading or resources for navigating the htop codebase would be greatly appreciated!

Thank you for your support!