Interview Scheduled 28th Feb

Hello All.
Just to revise for some.
Applied on 24th Dec 2013
application recd - 27th Dec 2013
Biometrics done 7th Jan 2014.
Interview (tele) on 15th Feb 2014.
Interview letter for formal interview - 28/2/14 @ sheffield.

I would highly appreciate all your help.
This is going to be big.
I wonder how long after interview will the decision will be made?

what sort of docs should i take with me accept the copies of what I have already sent during application.

Should I post them any doc to be considered as a part of the application .

What sort of interview should I be expecting.

Really nerve wrecked.

Anxiety, Anxiousness,.,,,,

Any one else who is meant to be there in Sheffield for interview this week friday ?