Not all teaching staff will be using the Library Reading List service.
Contact your module coordinator (or a member of the teaching staff for your module) and confirm with them where you will find the essential reading for your module. It may be presented in lecture slides, a seminar handout, module handbook, laboratory manual or elsewhere in Canvas and they will be able to advise you.
If there is a book, journal, journal article, conference paper or other material you are looking for, please use Library Search or consult the Library's Resources & Study Guides.