If you wish to go to Denmark for studies then you will need a Residence Permit for that. For that first you will have to take admission in a Danish educational institute. For acquiring a permit, it is necessary that you choose a program which has been approved by concerned authorities. You should have the ability to bear the expenses of education as well as boarding and lodging. In case of asking for financial help in Denmark your resident permit will be rejected. The duration for the permit will be decided based upon the time period of your study program.
Work during Study:
While acquiring higher education in Denmark, you will be only allowed to work 15 hours a week. But during the summer holidays in June, July and August you are allowed to take up a full time job.