Fruit trees

We planted a peach tree in our backyard a couple of years ago. It was just a tiny little thing and has grown quite a bit since then. It might even be big enough this year to produce some fruit. I am considering getting a second fruit tree for our yard this year. My goal is to be able to produce enough fruit in our yard to feed my family for a year. We love fruit and it can be pretty pricey in the store. I don't mind waiting for the trees to be big enough to fruit because I know the investment will be worth it. I am just not sure what kind of fruit tree to get. I want to plant fruit that costs me the most at the store and is easy to grow. I need to research pear trees to see if they would do well in my climate and my area.