Whilst we'd always recommend that you check out the libraries first (of course..) those nice people in Hull Waterstones have alerted us to their new Student Loyalty card/app which can be used in any Waterstones. (Note to York people, there's a Waterstones on Coney Street).
Students get 5% off all purchases as well as an electronic stamp for every £10 spent.
10 Stamps = £10 off. Not bad.
(See the bottom of our New Students page for some common sense things to think about too before deciding what to buy.)