Worked on maintaining and enhancing the Cheat Sheet Reference Library within the EbookFoundation/free-programming-books repository, focusing on improving the quality and accessibility of quick-reference resources. Added new entries, including the Bootstrap 5 CSS Cheat Sheet and the IIT Madras Python Cheat Sheet, to provide up-to-date information for learners and contributors. Addressed data quality by removing an invalid entry and resolved lint consistency issues by standardizing formatting across cheat sheet entries. Utilized skills in HTML, Markdown, and web development to ensure documentation remained accurate and easy to navigate, supporting efficient access to curated technical references for the open-source community.