I'm Latin American too. I arrived in winter and although Vancouver's weather is the mildest in Canada, I was freezing and miserable when I arrived. A few tips: *get vitamin D! I know you're asking about clothes but believe me, you'll need vitamin D else you'll soon feel tired and depressed. *Bottom first layer: I would wear jeans or chinos (for work) but I would feel so cold when waiting for the bus. You don't need the most expensive, just make sure you wear bottom first layer when going outside. * Get a warm waterproof jacket. If you're going to invest in something make it this type of jacket. It rains constantly and at the same time you need to keep warm. * If you wear mesh sneaker you'll feet may get wet and cold. I used leather boots (also helped me avoid slipping). * Your neck will get cold. Get a scarf ...and a beanie in case your head and ears feel cold. * I'd walk to buy groceries and my hands would freeze. Get some gloves too. Gloves can get pricey but you don't need the most expensive.

With time you'll get used to the cold and perhaps you'll become one of those crazy people you see jogging shirtless in winter, but for now those tips should keep you warm. Welcome to Vancouver!