You can find the 9 topics you need to cover on the Board of Studies website. Go to the syllabus page, then IT, then
Part B. You can download a PDF of all your units or a PDF or DOC of an individual unit.
Inside the syllabus for all the units or a single unit you will find a column on the far right named "HSC requirements and advice ". This is what you need to study for in the HSC & your trials.
You are much better off making your own notes than using someone else's. More importantly make sure you practice with past papers so you know what to expect in an HSC exam.