The Netherlands is a bureaucratic country and proud of it.
Regulations and procedures for expats and their families can seem daunting at first, but being prepared will make the process easier and faster. First of all, ensure that your documents are in order before you approach the two main bodies involved in registration and immigration: the BRP, where you must register your details into the Dutch system, and the IND, which implements immigration policy and makes decisions on residence permits.
Check that your passport is valid for the period of your stay and that marriage and birth certificates are translated into Dutch, English, French, or German and sufficiently ‘legalised’. This is generally done with the addition of an Apostille — an extra stamp on the original document required to certify foreign papers— which you obtain from the competent authority in your own country. See the Apostille section of www.hcch.net.