This document provides a checklist for developing a data management plan. It addresses what data will be created, how it will be documented, protected, archived, and shared. Key questions cover the size and growth of data, storage methods, standards, metadata, security, file formats, long-term responsibility, and access policies. Best practices emphasized include prioritizing unique data, automated backups, community standards, preserving documentation, consulting security experts, using open formats, and archiving data in disciplinary repositories.