During December 2024, DJ Xern contributed to the ebookfoundation/free-programming-books repository by expanding its curated content. DJ focused on content management and documentation, adding two new resources: "Introduction to Theoretical Computer Science" and "Fuzzing Book" to the programming books collection. Both features were implemented using Markdown, ensuring consistency with the repository’s structure and standards. The work emphasized careful documentation and software testing practices to maintain the quality and reliability of the resource list. While the contributions were limited in scope, they addressed the ongoing need for up-to-date educational materials, reflecting a methodical approach to open-source content curation.