Learning the content is one thing, but once you've covered an entire module, look at past HSC questions. Our syllabus dates back to 2002, so you don't have to worry about exhausting all the past papers before the HSC exam (because there are too many to do). Look at questions relating to the Module. Sometimes, you find that the examiners aim to distinguish those students who memorise notes from those who have a true appreciation of the content. They do this by including a stimulus where you need to piece together content from different topics within the module (sometimes different modules themselves) to apply the theory to a real life situation. You need to get a feel for the exam paper and the way in which questions are presented. Plan your answer using the content you know and compare it to the sample answers/marking criteria. Find lapses - areas that you should've mentioned to score full marks - and you'll soon develop a familiarity with how questions are to be answered. Past questions also signal whether the content you've learned is relevant or not. But only do this after you've learned the content.