Once you have been (conditionally) admitted to a Master's programme at Utrecht University, there are a number of practical matters to be seen to, such as:
International students will receive information from the Admissions Office on how to arrange the necessary practical matters (e.g., housing, a Dutch bank account, health care insurance, visa etc.).
Payment of your tuition fee
Dutch students can find more information here: Payment of the tuition fee (in Dutch). International students will receive information from the Admissions Office.
Student ID card
All students at Utrecht University receive a digital student card. The student card is visible in the MyUU app as soon as you've successfully enrolled and paid your tuition fees. You can download the app in the Apple App Store or the Android Google Play Store.
Master's orientation programme
International students will receive an invitation for the UU Orientation Day which takes place in September. Part of this programme consists of support and advice regarding practical matters, such as your registration with the city.