Here's a map and directions to the FBR Open. The signage is very good, so don't worry. Just follow the crowds. If you don't have VIP parking passes, you'll be parking in the general lots and you'll have to take a shuttle bus to get back and forth to the Waste Management Phoenix Open. The buses are convenient and come fairly often, so relax and enjoy the ride. There is no charge, and tipping the bus driver is not required. There are porta-potties at the parking lots.
Please make sure you remember which lot you parked in, and where you parked. Counting rows doesn't usually work, since the configuration of the lot can change dramatically after you leave your car! Find a landmark and note your car's location.