MIT Libraries archive their data management workshop materials here. Topics include: Strategies for Data Sharing and Storage, Managing Your Research Code, Data Management for Postdocs and Research Scientists, and more!
The Data Management Skillbuilding Hub is a repository for open educational resources regarding data management, meaning that it is a collection of learning resources freely contributed by anyone willing to share them.
The Data Management Training Clearinghouse (DMTC) is a registry for excellent online learning resources focusing on data skills and capacity building for research data management, data stewardship and data education.