I'm going to study and work in Finland for 3 or 5 years (maybe more

Now, my doubts about the car are which paperwork, payments and requirements (taxes, insurance, maintenance, modifications for winter) do I have to do to be able to bring my car and more or less how much would each of them cost?
It's a year 2001 BMW Compact 320D with 180.000 Km (I put this info because may be anyone who is capable of guessing how this could affect the prices)
And about the dog, I heard that in Finland there is not leishmaniasis, but I was wondering if instead of this they have other fatal diseases I should be aware of. Any information or experience you have about veterinarians, food brands, hospitals for animals, register by chip, taxes (if any), risks, etc. Would be really useful for me.
Also, it's important to know experiences about travel companies: which ones are worse and which ones are better for traveling by plane with your dog. It is 70 cm and weighs 35 kg, so it will have to travel in the cargo. That reminds me about the carrier, in google there're a lot of information about carriers for small dogs but not for big ones. Which companies lend it to the customer, which ones sell it or where to buy it, etc...
Well... That's a lot of questions '^^
Thank you very much for your time!
Julia