You can order your course books (at a discount) from the webshop of the study society of your programme. Check out the pages of your programme (Practical Information: Books, readers, printing) via the homepage. Of course, you can also make use of the course bookstore Studystore, or any other bookseller.
If you are taking a course for which you need a reader, you can order one in the Canon reader portal. Read more about the reader portal.