It depends on the airline, certainly the more seasonal carriers will give you a fixed term contract initially. I would imagine the notice period varies from airline to airline but a month is about right.
It depends entirely on your attitude.You need to be an outgoing person and not afraid to muck in, a "holier than thou" attitude won't get you very far. Do the job to your best of ability and keep a level head then you will be fine, and also really enjoy the job too. Good luck