It is important to remember the exam wont all be on the pre-release booklet. Some of the exam will be about what we've learnt about Extreme Environments, People as Consumers and My Place.
I have added a link to the Notre Dame website where I have stored some podcasts for Extreme Environments and People as Consumers. These should help in your revision.
The address is www.notredameliverpool.com/x_geo_pods.htm
There are instructions on how to set up podcasts on www.notredameliverpool.com