also note
Nevada law only prohibits concealed carry on your person if you do not have a CCW. Have no fear when you drive your car so long as it's not concealed on your person you are fine. I should also note that things like seat belts and arm rests are considered obstructions and do not effectively conceal your firearm the way a shirt or jacket does in the eyes of the law. You can legally drive your car with your firearm loaded and a round in the chamber (bar long guns). It can be in your glove box, inside your center console or under the seat and not be considered a concealed firearm. if it's tucked under your shirt then it is concealed and you must have a CCW.
One thing that will help ease your nervousness is knowledge. You need to know what to say if and when you are confronted. You need to know what bounds the police must stay within and what your rights are.
For instance consider the following retorts
Merchant: Is that a gun?
You: No, it's a firearm. Criminals carry guns.
Concerned uneducated citizen asks you: Are you a cop?
You: No, do you need one? I'll call them for you.
Police officer asks you: Why are you carrying a firearm?
You: (Say nothing)
Police officer asks you: Where are you going / where are you coming from?
You: (Say nothing)
Police officer asks to see your ID:
You (if driving): Must show ID
You (if not driving): Are required only to give your name (spelling, DOB, SSN, Address not required).
North Las Vegas Police officer tells you that firearms in a car are prohibited by local ordinance:
You: Respectfully tell them that State law preempts all local ordinances regarding firearms with the exception of registration.
These are only a few example situations you should be particularly aware of. Other commonly asked things are, "What kind of permit do you have to have to carry a firearm?" I simply tell them that in Nevada as long as you can legally own the firearm you can carry it in plain sight. It is also not illegal to carry into banks, casinos, bars or restaurants, though private property means they reserve the right to refuse service and demand that you leave. You can consume and even be under the influence of alcohol while armed, keep in mind that you may nor legally carry a firearm with a BAC > .10. Around the house, you can conceal on your person without the need for a CCW, but the law is somewhat unclear about areas of your property that allow unrestricted access to members of the public, like your front yard or porch, be careful.
There is a federal law that says that you may not posses a firearm within 1000 feet of a school (constitutionally questionable), but there is no state law other than prohibiting being on school grounds with a firearm. Technically the feds or even metro could charge you, but this is practically a non issue in Nevada. Metro doesn't really want to have to make a federal arrest because they would have to charge you in federal court and federal court that is a whole other ball game in the world of law enforcement. And lets face it, How often do you run into federal law enforcement? Dont worry about the federal 1000 foot rule.