Tire pressure gauges are simple to use. Just take the valve stem off the tire and insert the gauge end into the stem fully. You will then get your accurate tire pressure reading. Just replace the valve stem and you're done.
I have a hard time operating most tire gages, but would like to find an easy to use one to keep in my car. Where can I find an easy to use tire pressure gage to keep in my car?
Amazon has discount tire gauges and I would look on Wal-Mart or Target. Those stores have almost everything, so you should be able to find what you are looking for