Moving around Sweden is very easy and usually the cities and facilities are well connected through transportation. The same goes for Luleå, however during the heavy winter, having a car can facilitate your daily life.
→ For public transportation in Luleå (buses) throug Luleå LocalTrafik (LLT) you can buy tickets with student discount if you have the Mecenat card. You can also get student discount for train tickets to travel from/to Luleå to other parts of Sweden.
You find information about LLT app here.
→ To drive in Sweden you need to get a Swedish driving license, you can find more information about it here.