Norman Fomferra updated the contributing guidelines for the EOPF-Sample-Service/eopf-sample-notebooks repository, focusing on standardizing code style and improving the contribution workflow. He introduced documentation that details formatting with Black, adherence to PEP 8 naming conventions, and clear instructions for contributing Jupyter notebooks. By establishing these guidelines in Markdown, Norman aimed to streamline onboarding and ensure that all notebooks remain consistent and maintainable. The work emphasized code style guidelines and documentation practices, providing a foundation for future contributors. While the update did not address bug fixes, it laid the groundwork for higher code quality and collaborative development within the project.