ok, here is what i did in the last coupla months of year 12 and i SOOOOO should have done it all along.
Use your syllabus. If you ahvent already got it, then get one now and read it over before you start stuff. find out what correlates in the textbooks, and then, after a class, work out what it correlates to with the syllabus and summarise under that particular dotpoint. Do all these summaries separate to your class work. i had to do them in a book cos our computer resides in the lounge room, so that wasnt gonna work.you will find you teacher will jump around the syllabus a bit, as will your textbook, but it doesnt matter. it just means that you ahve to be on the ball and tell you teacher when they ahve missed something. As both my chem and physics techers did, which i only realised in the last few weeks. See the value of using you syllabus all along?
Also, read ahead in you textbooks. Doesnt take long, it would take you ten minutes max to pre-read what you will cover in the next 2 or 3 lessons. it just give you an extra repetition, and you will be far less likely to get confused in class. Like i did with my friggin chem teacher, who would just start yabbering on about something we have never heard of.
If you can, dont study in your bedroom. its just not good. separate life and study. life will still be there after the hsc so dont screw it up!
Ask for extra help if you need it.
Grill you techers for as many recources as they have.
Do past papers and make you teachers mark them.
Do more past papers. Although there atill arent heaps for anything other than maths. Still, there are usually practice papers in summary books like excel, too.
Study with a disiplined friend. My best friend was a machine, and she got me going right. This is particularly good during stuvac.
And if you are the disciplined one, dont study with a REALLY unsettled friend. I had one study sesh where the guy i was with just dragged me to the beach and built a fort and squished my friend and i with jellyfish. Do have these sort of days, cos you need a life, too, but not when ur supposed to be studying!
swap resources with other people in you class and from other schools. i couldnt with other schools cos my school is pretty isolated, but get as many points of veiw as you can, expecially with humanities subjects.
Read you english texts at least twice. Shithouse, i know, especially with books like my place and jane eyre, butyou really should. Start in these hols.
OK, ive written an epic, but hey, im a lady of leisure now!
Hope something here helps. also, i actually know a couple of older people who topped subjects by doing the dictaphone thing, which i reckon i sould have done.