Well I must firstly say that it really depends on the subject. However, I would say that for the average subject, I attend the lecture then go home and read all the required reading. Then ideally I would do the tutorial questions and then attend the tutorial. However, I usually just attend the tutorial without having answered the questions and then go home and either read the questions (if answers are given) or do them for myself (
Note: if it is a mathematical subject I find I have to actually do the questions myself or I will forget how to do it come exam week). Finally, in the week or so before the exam I will read the tutorial answers and maybe glance over a few concepts in the textbook or read the chapter summaries. Following that framework has maintained my WAM at a bit over 80
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Give it a couple of months/tests and you will know what is required for each subject
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