Welcome to truckingboards and to FedEx Freight West. Hopefully there will be other P&D drivers come along that can give you what to look for and what you can expect.
As a line driver all I can suggest is that you do a thorough pre-trip inspection, checking for air leaks and making sure that your valves are closed. I can't tell you how many P&D drivers I have seen come to the gate ready to go out and having all kinds of air leaks when they step on the brakes or having the congear air tank valve wide open. Some think that just because they have a rear lift gate trailer that they don't have to check for air leaks.
Proper way to check your set is to have yellow button OUT. Red button IN. Hand valve DOWN so you have brakes applied and walk all the way back and open both emergency and service side valve to see that you have air going all the way to the back and also checking the congear making sure that there are no air leaks. One thing that you will run into with West trailers is that the QR valve (quick release) will sometimes leak. I don't think FLG has a shop, but you can get somebody to show you how to fix that.
GOOD LUCK. Flagpole is a beautiful place to live and you are very lucky to be there.