I'm most proficient with a sword and shield, next with a bow and arrows. I can handle a spear as well, although it isn't my preference. I have been using all of these since I was nine; however, not all of my experience prior to coming to Mount Weather is recent. I am accustomed to fighting both offensively and defensively, alone or with others, and to sleeping rough while campaigning. I've also led Narnia's armies in the absence of the high king. I am currently engaged in learning more about modern firearms.
And yes, sergeant. The practice of turning her enemies to stone was characteristic of I have the White Witch, Jadis. I believe it possible that some of the frozen statutes may have been her work as well.
As to my familiarity, I have fought her, and I have been witness to her councils. I also have first hand experience with the dangers of eating her food. It can be recovered from, but as with the spell of stone, the one with the power to cure it does not seem to be in this world at this time.