A GitHub wiki is a great place for your project's documentation. You can use the wiki to create, manage, and host documentation for your repository so others can use and contribute to your project. GitHub wikis are easy to start using without installing any other software. The best part is

freeCodeCamp is a nonprofit organization offering free online coding courses and programming tutorials, covering topics such as web development, data science, and machine learning. Learners can gain practical coding skills, build real-world projects, and earn certifications to advance their careers in tech.

freeCodeCamp

GitHub Wiki is an integrated documentation feature in GitHub repositories that allows users to create, manage, and host documentation for their projects. It can be started with a single click, cloned locally for offline editing, and customized using Markdown, HTML, and CSS. Collaboration can be enabled or disabled, making it useful for both open-source and private projects.

What is a GitHub Wiki and How Do You Use it?

What is a Page? How Do You Create a New Page in the Wiki?

How to Enable and Disable Collaboration in the Wiki