If the earth tilts etc through the year then why does polaris stay in the same place. This is very odd. Rers?

Polaris is (almost) directly above the north pole ... the earth remains at the same tilt all year so Polaris does not appear to move
If you are at the North Pole Polaris will appear directly above
If you are at the Arctic Circle (~66 degrees N) Polaris will appear 66 degrees above the horizon when you face North
If you are at the Tropic of Cancer (~23 degrees N) Polaris will appear 23 degrees above the horizon when you face North