You may be able to use an e-book provided by the library as your course textbook. If you do, you could link to the book or specific parts of the book in your Canvas site. If you use an e-book through Milner, the library would pay for the access.
Using a library-licensed/purchased e-book has the potential to save students a lot of money, and sometimes it doesn't cost the library very much. For example, a Communications course has used the book Critical Media Studies: An Introduction, which would have cost each student about $45 to get their own copy. The library bought an e-book copy for $116, and that copy was accessed over 1,200 times in 2019!
Since Fall 2020, Milner Library has been purchasing electronic editions of many textbooks assigned by ISU instructors. Check out the most recent semester's e-textbook list.
There are a few considerations to using e-books as a course text:
In sum, library-provided e-books can be an affordable and convenient solution for a course text, but there are many variables. It's best to contact your subject librarian early in the process as you can.