i find the easiest thing to do is to go to the tsfx lecture and get their notes (and like...they over EVERYTHING so you knwo ur safe) Do all teh question the the book, then get the notes binded togeather at officeworks/school for liike 5 bucks. Trust me, it's totally worth it, make it SOOOO much easier to acces the stuff when you need to.
As to refering to the notes, no, generally you don't, but it is useful if they throw something at you that is unexpected, e.g. last year there was aquestion on indenpendent events whihc is a yr 11 methods topic and i had no idea about it so i had to look it up in my notes. Apart form that, i did not touch my reference notes, except the front page which was my own formula sheet which i has scribbled all over adding extra formulas and other things that i needed to remember.