Hello! So you don't know me at all, but I'm Mary MacDonald and Dumbledore contacted me about becoming your kind of guide and all-around helpful gal. If I've got the right information, you're living in Hogsmeade right now, which is brilliant because I'm also in Scotland, though living on the family farm.
Anyway, a bit about me... I'm a professional dueler, though back from the circuit in Russia due to an injury. (Normally I wouldn't divulge that kind of information right off the bat, but I don't want you to feel awkward when we meet and I have a rather useless left arm). I'm still in training but in rehabilitation, so I'm not in the active circuit roster at the moment. I've recently come back and hope I can be some sort of help to you.
Anyway, feel free to owl me anytime. Whenever you need to go somewhere, just give me about an hour so the owl has time to get to me and I have time to get to you, and we'll be golden.
If you'd like to meet for drinks at the 3 Broomsticks, I'd be willing.