McCarran International Airport (LAS)
Las Vegas' main airport is no different than any other major airport in the world, except they're probably a little better at efficiently dealing with large crowds, mostly because they have the chance to practice every single day.
For those arriving from domestic locations it's an easy matter of finding the baggage claim. Look for the signs or, more obviouly, just follow the crowd. More than likely you'll hitch a ride on a tram and still arrive at the baggage carousel ahead of your luggage.
International flights land in Terminal 2. From here there's a bus to Terminal 1 where taxis and other ground transportation is found.
Free Wi-Fi is available throughout the airport, and the standard warnings about basic precautions apply.
Taxis are available from the cab stand outside exits 1-4. The line is often very long, but generally moves very quickly.
Several hotels offer off-site check-in at the airport and, for a small fee, will deliver your bags directly to your hotel and give you a chance to buy show tickets, make restaurant reservations and the like.