Q. Security Certificate warning in browser when accessing a library webpage

If your browser is issuing a warning about the certificate "guaranteeing the authenticity of this website" when trying to access library online resources, it will be safe to click "Continue".  If there is no Continue option, click the "Advanced" button to override the browser's security concern.  If there is no Advanced option try accessing in private/incognito mode.  Alternatively, use another browser such as Firefox.