This is one of our threads that may help you. Since it doesn't give you names of foods I can tell you I liked Solid Gold, Wellness and Royal Canin but there are many other excellent foods. I would not buy your pets food from a grocery store.
http://www.yorkietalk.com/forums/gen...w-parents.html
As far as pet insurance goes I understand VPI Pet Insurance is widely used but I never purchased pet insurance for my pet. I remember that I got a quote from one of the companies and instead of getting it, saved that amount in a seperate account, I sometimes thought the vets raised their prices a bit if they new you had insurance. This worked well for me since my yorkie had very few health problems. It's a gamble either way.
Maybe someone else can tell you their experience with health insurance.
Welcome to you and Louis to Yorkie Talk.