my orientation was 3 weeks on days, and then I followed a nurse for a month on midnights. after the first couple days on nights, I took a side of a unit and she took the other. It was good because I had her to fall back on if I got stuck on something.
charge nurse for me is Im in charge of the unit Im on, and the cna's that are with me. I have a supervisor that makes rounds and is there if we need.
it all depends on how your facility works