This document provides an introduction to research data management. It discusses why sharing and preserving data is important, including meeting funder requirements and enabling data reuse. It outlines common barriers to data sharing, such as time and lack of credit. The document then reviews data sharing policies from various funders and journals. It provides examples of National Science Foundation data management plans and ways to share data, such as through repositories, personal websites or data journals. Overall, the document aims to introduce best practices for managing, sharing and preserving research data.