The Regional Transportation Commission of Southern Nevada (aka RTC or the bus) has launched the Ride The Strip website which features a lot of information that will help visitors use the bus system. It features quick links to fares, Strip routes like The Deuce and SDX, the mobile RideTracker site and customer service. It also includes details about how to get to and from the airport via bus. You can download a pdf of their Getting Around Las Vegas guide, if that is more convenient.