If you have your concealed carry permit, you should already know what the law is.
Are you saying that he should have researched this before getting his permit? Or that this should have been covered already? I don't see where Virginia has any kind of a requirement that the CCW holder has any knowledge of the law.
If he doesn't know, I applaud him for asking.
This is from the VA application:
In other words, you're on your own- if you don't know the law, read court cases until you figure it out.