If you want to gain more background knowledge within your field of studies, taking a minor can be a good option. A minor takes half a year. Are you planning to enrol in an (minor) study programme, you are entitled to an exemption from tuition fees (or part thereof).
For more information about minors, go to www.kiesopmaat.nl. Please note, most minor study programmes are taught in Dutch and therefore the information on this website is also in Dutch.