what are the guidelines for first time electorate in NSW Australia?

Answer 1

I'm assuming that you've enrolled to vote? It isn't automatic, you have to fill out a form at the post office.
Well, if you've done that, tomorrow the polls open at 8am and close at 6pm. You go to your nearest polling booth where you can pick up some pamphlets from the people representing various parties outside, usually important if you want to vote in order of preference rather than a simple x in the box.
When you go inside, the people at the desk will ask you your name and address and will give you a ballot paper. You go to one of the booths and mark your choice[s]. I suggest you just put a little x in the box next to Labor, especially if you are a student, a worker or a caring person.
Then after you've done that, you go and put your form in the ballot box and that's it. It's as easy as that!