I'm ruining the sarcasm but:
Memorizing crap so you know it enough/well/off by heart or enough practice that you know how to do the questions properly.
You no, no point trying to convince yourself by providing arguments. Just ask your teacher if it's fine, if you cant, just hope that your teacher doesn't mind.
about 4-6 hours a week (just accounting HW, thats it), I love uni.
But exam for accounting is done.
For exams depends, about 30-40 hours in 2 days before it, depending on subject.