URSUS is the library catalog for the entire University of Maine System, as well as the Bangor Public Library and the Maine State resources (Maine State Library, Archives, and Law and Legislative Reference Library). If an URSUS library other than Fogler has material you want, you can log in with your name and library card number and request it to be delivered to Fogler.
Mainecat is a library catalog for libraries across the state of Maine. If you can't find a book you're looking for on URSUS, you can see if MaineCat has it, and you can request it to be delivered to this library.
This link has instructions about how to bookmark the URSUS Libraries Proxy Bookmarklet in your web browser. When you are browsing the web through non-library resources and come across material behind a paywall, clicking on the Bookmarklet will reload the page through a University of Maine proxy server, allowing you full access to material Fogler Library subscribes to in most cases.