Hello, i have played WT for about 10 hours.

Some questions:

1. How do i get rockets, and what airplanes support them?
2. I have seen people say do not look at what tier the airplane is but something about battle rank? (or something like that), what is that?
3. If i fly non arcade (start flying rather) should i use a joystick or keep ye old mouse? (I do have joystick, aviation enthusiast here)