As a new student, you are offered to join a vector group with 8-10 other students from your programme. A vector is associated with your vector group. A vector is an older student, typically from your programme, who is there to help and guide you through your first semester.
Your vector can answer almost anything – from practical things like where to buy your books, academic things like which courses will be particularly interesting and relevant to you, to social things like where you will find the coolest parties on campus.
You can use your vector group in several ways; for example, as an information group, where you can get help and guidance for everything to do with your study, or you can use it as an active reading group.