Yes, I am from Japan. You mentioned you are Russian? I am afraid I don't know very much about your country other than that we are neighbours. I am afraid much communication happens on these strange instruments. The ship is... well, the technology is so far beyond my understanding that it seems magical. Rooms move and there doesn't seem to be an end to their variety. So much space cannot be filled.
Apparently the TARDIS translates speech and letters automatically. I am speaking my language and you are speaking yours but we hear things in our own. Sadly, I don't think there will be a need for translation unless someone breaks the ship worse.
There are quite a few! I am very fond of my precious students. I dislike doctors also. I avoid them like they carry plague. I'm sure you will find something to do, Mister Razumikhin.