OpenAthens is the authentication system that controls access to full text book, journal and many other categories of electronic resources. Authentication often works seamlessly, when you are on campus. However, access to eresources off campus involves extra steps, especially when connecting via LibrarySearch. To help you, we have produced step-by-step guides to authenticating off campus at: http://libguides.gre.ac.uk/eresources/offcampus.
LibrarySearch is the University's resource discovery service that allows you to cross-search multiple full text ebook and journal article databases. For further information, please see the our Library Guide.