buying fruit trees

I've never been to buy fruit trees.

When we bought this house, the back yard contained several non-fruit bearing pear trees. I find that to be a real waste. I'd love to have some trees that actually bore fruit. We have talked about getting a lemon tree. I don't know how hard it is to maintain fruit trees but I wouldn't mind giving it a try. When the weather warms up there may be a possibility of looking more seriously into getting some kind of fruit or nut trees. The lemon is one I'd like to try. My neighbor has banana trees. My friend suggested blueberry bushes. Or maybe blackberry. I'd never even considered Mulberry trees. But I'd be willing to try any where we could eat the fruit!

That I'd like to see.