DUO (Dienst Uitvoering Onderwijs) is part of the Dutch Ministry of Education, Culture and Science. DUO organizes financial support for students and organizes things like exams. If you are from an EU/EEA country or Switzerland and find enough time to work at least 56 hours a month next to studying then you qualify for a monthly loan of up to €1016 and big discounts on Dutch public transport. This is called studiefinanciering. Follow the steps on the website to apply.
Up until recently studiefinanciering was a grant. However, the grant has now been converted into a loan. How much money you borrow is up to you but you have to pay back the whole sum within 35 years of completion of your studies. These changes do not apply to those of you that have been receiving studyfinance for some time now (i.e. you applied for it earlier than September 2015).