Southern California is filled with Natural and Whole foods stores. You can start with the chain called "Whole Foods Markets" (http://www.wholefoodsmarket.com/stores/list). They have at least 20 stores in the LA Area. They also have a great bulletin board system at the stores. There are smaller local stores and restaurants all over -- take a walk down Abbot Kinney in the Venice area and you'll feel like you've gone to Organic Life Style heaven.