Worked on localization and accessibility enhancements for the harvard-edge/cs249r_book repository, focusing on expanding documentation reach and usability. Delivered multi-language README translations in Chinese, Japanese, and Korean using Markdown, and introduced a language switcher to streamline navigation for non-English users. Standardized documentation filenames to ISO 639-1 codes, ensuring consistency across the repository and aligning with internationalization best practices. Updated the documentation’s year target to maintain alignment with the main README, supporting future-proofing efforts. The work emphasized documentation, localization, and project management skills, resulting in improved accessibility and a more inclusive experience for a broader, multilingual user base.