David Wiley is one of the pioneers of OER. He and colleagues have suggested (Hilton et al., 2010) that there are five core principles of open publishing:
- re-use: The most basic level of openness. People are allowed to use all or part of the work for their own purposes (for example, download an educational video to watch at a later time);
- re-distribute: People can share the work with others (for example, send a digital article by-email to a colleague);
- revise: People can adapt, modify, translate, or change the work (for example, take a book written in English and turn it into a Spanish audio book);
- re-mix: People can take two or more existing resources and combine them to create a new resource (for example, take audio lectures from one course and combine them with slides from another course to create a new derivative work);
- retain: No digital rights management restrictions (DRM); the content is yours to keep, whether you’re the author, an instructor using the material, or a student.
Taken from https://opentextbc.ca/teachinginadigitalage/chapter/oer/
It's possible to share resources via a Creative Commons licence, please see below