To understand how to get from the airport to Cancun, you can check out its official website. The bulk of tourists in this case use cab or bus services.
If you prefer to take a cab, it will cost 400 MXN to get to the city center. A ride on a specialized orange bus will cost only 30 MXN per person.
The airport in Cancun is to the south, the city itself is to the north, and throughout the central area stretch hotels and restaurants between the sea and the Nichupte Lagoon. So navigating the city is easy enough, whichever mode of transportation you prefer.