From the "Current Classes" page in Canvas you can view all of your current, upcoming and past classes and check if there are any requested readings for which you still need to upload a file. Through this page you can access past and current classes in order to clone readings for other courses.
The image below is an example of the Current Classes page within the Course Reserves tab.
Under the Course Reserves tab you can:
Tag items with keywords (from the "add item" or "edit item" pages)
This guide provides instruction for using the new Course Reserves system.