Any work is automatically copyrighted, even without a statement. Copyright protection exists whenever something is posted online, though users are typically granted an implied license to view and share content. Authors can also attach explicit Creative Commons licenses to allow certain uses of their works. Libraries license academic resources for student use, and permission to use a specific work can be obtained through copyright.com. Fair use and the TEACH Act provide some exceptions for educational uses, but one remains liable for damages if ignoring copyright law. Websites like openlibrary.org and opencontentalliance.org make orphan works and public domain materials accessible.