Worked on updating the Developer Build Prerequisites Documentation for the zen-browser/docs repository, focusing on improving the onboarding process for new contributors. The work involved identifying and documenting essential tools such as MozillaBuild, Mercurial/TortoiseHg, and Python, ensuring that developers have all necessary software installed before attempting to build the desktop browser. Using Markdown for clear and accessible documentation, the update aligned the documentation closely with the repository’s build workflow. This approach reduced potential build failures caused by missing prerequisites and streamlined the setup process, supporting more reliable builds and enabling developers to get started with fewer obstacles and less confusion.