On Saturday, Recreational marijuana will become legal to purchase in Nevada. This doesn’t mean anything goes, though. Officers say for months they have been preparing to enforce the law passed by voters in November. They will focus on keeping impaired drivers off the road and will crack down on those illegally using weed in public. It will be legal to use only in a private home which includes yards and porches. Local governments can ban recreational sales and decide whether to grant local business licenses. However, they cannot outlaw adults from possessing up to an ounce of weed or consuming it in a private home.