Your professors will sometimes add library resources into your courses in P.L.A.T.O. These resources can include eBooks, articles, and videos or any other type of resource that will benefit your class.
In order to locate these resources, look in your "Course Content" tab in P.L.A.T.O.--the resources will likely be linked there in the "Table of Contents." The library materials may also be linked under the "Links" option in the "Resources" drop-down menu.
Not every class will have course reserves or library materials, so if your course does not have any library materials, don't worry! Every class has it's own individual assignments.