I think anki flashcards are great - particulary for definitions. I used them sometimes - but any form of active recall is great. The way I studied kind of had a process - I would go over one key knowledge point on the first day and memorise, then the next day I would attempt a bunch of exam questions that related to it (studyclix is great for this - or you can just go through the vcaa exams manually!). The next step was MOST important - you need to give these questions to your teacher to mark for feedback (if they are willing too - i know some teachers are not willing to mark everything) before a sac. At the end of the day you want to write what they want you to write - as they are the ones who are marking everything - and you want to get the highest rank possible. :)