After you log in your account in WorldCat Discovery interface, you can see all the materials you checked out and you placed hold on. You can renew items about to overdue. You can also see fines and fees that are associated with your account. Shepherd students, faculty and staff can use their shepherd email/password combination to login to My Account. Community members can follow the instruction to login.
Besides the circulation functions mentioned above, logging in to your account gives you some added benefits: you can save your searches and run them later, save items and create a reading list.