You can find the titles you need at Using the course codes mentioned in the study programme or admission letter. Once you know which books you need you can order them at a book store. You can also get help of the study associations. The study associations will sell you books at a reduced price. For information (see below).

You can order your books online. To do this, you need a University of Twente ICT-account, which you will receive when you enrol for your study, ánd you have to become a member of Sirius first.