Where can I find out what textbooks I need for my classes?

Before syllabi become available on canvas, the UIS bookstore is the best place to find out what textbooks you'll be needing.

As long as the professor has released what books they'll be using, it will appear on the bookstore website and you can search for your textbooks using your UIN (where it will give you a list of all the textbooks you need for all your classes), or using the class code/title.