The three most important types of materials available here are past examination papers, exam marking schemes and chief examiner reports.
Most students buy past exam papers in book form, but they are also all available online in PDF form. Not only is it an inexpensive way to get all of the past papers, but they can be easily read on a tablet or laptop and you can search for specific keywords (by using Ctrl + F on your keyboard).
What is really indispensible, though, are the marking schemes for each subject on the examinations website within the examination material archive. These documents are used by teachers marking the Junior and Leaving Cert exams to grade papers and they offer students a valuable insight into how marks are allocated for each subject.
Read through the marking schemes for each of your subjects and learn what will help you gain or lose marks in each question. Come exam time, if you know what the examiner is looking for then it's much easier to give it to them. An in-depth knowledge of the marking scheme will help you to allocate your time more cleverly during exams and identify question areas where additional preparation is needed beforehand.
Chief examiner reports:
Finally, make sure to read the relevant chief examiner reports for each of your exam subjects. They provide a review of the performance of students in past examinations and a detailed analysis of the standards of answering each section of the paper.
This analysis of past student performance can help you to avoid making the same mistakes when your turn arrives.
A great example of how useful these reports are can be seen in the 2012 chief examiner report on Leaving Cert geography. This covers the 2012 higher and ordinary level exam and goes into great detail on each question (how many students attempted each, typical mistakes, etc.) and offers recommendations to students on how to improve their results.
Not only did this cover the written paper, but there is also a comprehensive overview of the geographical investigation report, worth 20 per cent of the overall grade.