If you are taking a course for which you need a reader, you can order one from Utrecht University’s Xerox Webshop (€5 - €20). Your reader will be available about two weeks before the start of your course.
Are you looking for an available place to study? Studyspot shows an up-to-date overview of available study places (with or without PC) per building. Click on the building for more information on its location and opening hours. You can find places to study in the Uithof (Utrecht Science Park) and city centre. The university libraries have many study places.