The food you buy locally can be picked closer to being ripe so it’s got more food value. It hasn’t taken gallons of fuel to get it to you and it’s nice to support your own community.
Shop at your local farmer’s market. While at the grocers look for signs on produce that state it’s grown locally. Buy from local farmers. These farms can be found by searching Eatwild.com or Localharvest.org. The best way to eat local is to grow it youself, you have more control over the food you eat if you grow it yourself.