Bring it down to your instruments or ammunition (so to speak) which will bring the law to a state of practicality as oppose to theory which will not get you the high marks.
Your notes are fine. Do what works for you. The key point is to remember your legislation/cases/media articles/other instruments for CERTAIN areas of the syllabus. So ask yourself, "if I get a question on family breakdown, what will I write?" - then take out a piece of paper and write all the legislation/cases/articles that you will use, do that for contemporary issues and larger parts of the option syllabus. For crime, do the same thing on certain topics they can ask you on i.e. don't work yourself up on earlier syllabus points which are the basic foundational principles, but lean towards the later content (young offenders, international crime etc...)