- Programming Knowledge
Know at least one programming language well (Python, JavaScript, C++, etc.) so you can actually read and write code in a project.
Be comfortable with basic debugging and reading other people’s code — because most contributions involve understanding existing code first.
- Version Control (Git & GitHub/GitLab)
You must know how to use Git, since almost all open source projects use it.
- Non-Code Contributions Count Too
You don’t always need to write complex code. You can start by:
Fixing typos / grammar in docs.
Improving README.md or documentation.
Writing tests.