I have a few questions.
If I want to do Arts - how many Art subjects do I pick?
I don't really understand the whole major and minor thing.
Also for law, how many law subjects do I pick or are they all core?
Thanks : D
Here is the course map for BA/LLB:

As you can see, you pick 16 arts subjects.
(Ignore the stuff about "arts major", "arts minor", "elective" etc. You can tailor that to your own needs - for example, if you want to do a double major instead of a bunch of electives. Definitely see a course adviser - I can only help you so much.)
Re: majors - see my post to andy456. Basically: one subject is 6 credit points. A major is when you do 48 credit points' worth (i.e. 8 subjects) in a particular area. A minor is when you do 24 points' worth (i.e. 4 subjects).
Re: law subjects - the law subjects listed in that table which don't have a * next to them are the core subjects. They are compulsory and you cannot graduate with a law degree without completing those.
The subjects with a * next to them (Equity, Trusts, corporations law, civil procedure, lawyers/ethics/society, and evidence) are quasi-compulsory. You can get a law degree without doing those, but you won't be able to practice as a lawyer in Victoria.
Also, as you can see in the table, you can pick 8 electives. These can be anything you want. I've uploaded a copy of the list of electives offered in 2010 if you want to have a look at the types of law you can choose to study.