Developed comprehensive account documentation for the ddbj/www repository, delivering a detailed Markdown guide that streamlines DDBJ account creation, usage across multiple services, troubleshooting, and integration with the NBDC Human Database application system. Focused on structured knowledge transfer, the work emphasized clarity and consistency, aiming to standardize onboarding and support processes for users. Leveraged Markdown for documentation and utilized version control to ensure traceability and maintainability of updates. The documentation is designed to reduce support requests and training overhead by providing clear, accessible instructions, reflecting a methodical approach to technical writing and user enablement within a collaborative development environment.