If you are a visitor on a 90-day visitor North Cyprus visa, your full driving licence from your home country is accepted in North Cyprus and must be valid for the whole period of your stay.  You do not need an international driving licence.  If you become a resident, you need to apply for a local TRNC driving licence.  This is easy to apply for at the Lefkosa Driving Licences Office.  You will need a copy of your original licence, passport and two passport photographs and to pay a fee.  You will still need your original home licence to drive in south Cyprus where TRNC driving licences are not accepted.