What have I done so far?

So far I have made sure my fan was off when I wasn't in there. I have made sure things are unplugged when I was not using them (Charger for laptop, and any other chargers). The heat is off because we don't need it. I shut the water off when not in need in the shower. But I don't know about the buying food from here. We have chickens and had pigs so we don't have to use the store for eggs, chicken and ham/bacon ect.