'Napoleon' just means it's extra old. Aged for at least 6 years. If it was a gift, I'd say it's likely very good stuff. Anyway you don't sound like a brandy connoisseur, so I wouldn't worry too much about it. But don't mix it. That would be sacrilege.
Brandy stimulates your heart. It's a bit like red bull in a way, I wouldn't recommend you try to get drunk on it. Instead, treat it medicinally. Get yourself a hip flask. Then get yourself outdoors during the winter months, and fortify yourself with 'nips' from your flask, while walking in the country side, horse riding, shooting, day tripping in old open top vintage cars, watching local level football games, that sort of thing.