The document provides an agenda and overview for a Crossref workshop on using metadata and Crossref services. The agenda covers topics such as an introduction to Crossref, registering content, the importance of DOIs, and working with the Crossref community. The overview discusses Crossref's role in making research outputs discoverable and reusable, its membership of over 12,000 organizations, and the over 100 million scholarly content items in its metadata store. Key Crossref services that are highlighted include reference linking, cited-by, and the Funder Registry.