This toolkit from the universities of Leeds, Sheffield and York, provides information and tools to help faculty and library staff to understand, engage with, and sustain OER in their work and practice. "Open Educational Resources (OER) are learning, teaching and research materials in any format and medium that reside in the public domain or are under copyright that have been released under an open licence, that permit no-cost access, re-use, re-purpose, adaptation and redistribution by others."