The easiest way to transfer it into your name is to go at ACI agency. I think it's the better way because they do all for you, and you and the vendor must only sign the documents. Otherwise you can make all by yourself but you must go to several offices like PRA, Motorizzazione Civile, Municipality, and go at the postal office to pay the tax. This is cheap but you must have many free time!
I can't help you about the insurance because it can change from region by region.
bye
