My question involves insurance law for the state of: Canada, Ontario

Hi, I'm new on these forums and I was wondering how something would work. Me and my dad want to purchase a vehicle and split the costs 50/50. The vehicle is used (2001 Chevrolet Cavalier, 4-door LS) and we do not know how to get insurance and whose name it should be in. I would mainly drive it during the summer, and he would drive it in the winter. Just wondering how the insurance would work. Thanks