Eating locally grown food is good because that means that it didn’t travel at all. In other words, the truck or plane or boat that the food could have come from didn’t emit carbon. Some  other benefits of eating locally are:
You support your town/city
You know (or can find out) the way that food is grown
And you are confident that this food is delicious
My family has a garden in our backyard, as well as a compost bin. We are currently growing tomatoes and lemons. At school we have life lab where we learn about plants and plant them around our school. We have a garden in which we are growing fruit trees, and a chicken coop. My family, as well as some others, are trying to eat mostly locally grown foods. Try to too!