During September 2025, Miika Piiroinen enhanced onboarding documentation for Aalto Mac users in the AaltoSciComp/scicomp-docs repository. Focusing on technical writing and documentation skills, Miika updated reStructuredText (RST) files to reflect current ITS resources, revising main links and adding direct guides for first-time setup, password changes, admin rights, and managed software. The work clarified installation steps for .dmg files and detailed the use of the managed software center, incorporating updated program names and ITS instructions. These targeted improvements aligned documentation with actual support processes, reducing user confusion and support requests, and demonstrated thorough attention to detail in technical communication.