When you attend a Sunday farmers' market, bring a reusable bag or cooler to carry home your purchases, and make sure you have small bills for payment. After you arrive, don't be afraid to chat with sellers to find out where and how their goods are grown.
Add some variety to each farmers' market visit by deciding to try at least one new fruit or vegetable every time. Ask the growers for cooking tips or recipe ideas. Plan to arrive early if you want to take advantage of the largest selection, or try to be one of the last shoppers to take advantage of end of the day deals.