If you are on-site today (Tues 11th) you'll find the SCM booksale in the Common Room.
However, as usual, for all our many students who are not physically present at Queen's on a Tuesday, they are offering us a 'virtual booksale' with the same discount (20% off all full-priced books). To access the virtual sale, follow this link:
and follow the instructions about using the discount code at checkout.
The virtual sale closes at midnight on Thursday 13th Feb (and, from the webpage, looks like it may not be live until midnight tonight, Tues 11th).