There have been a lot of threads around these parts asking for advice on how to succeed in GCSEs. It's not easy - I'll tell you that much - but equally, with the right techniques, it's not too hard either.
Attached is a general assortment of tips, tricks and general advice for performing as well as you possibly can in your exams at this level. I'm not saying it's perfect, but I hope it's of some use to you all.
All the best with your studies,
Krollo