split into 4 sections : Theory, CPR, Pool and First Aid.
Theory: Questions on pool operations, scanning, and such like. Easy, especially if your assesor is laid back, ours werent strict at all.
CPR: Resuscitation on manikins. Learn it, as its possibly the most important thing to learn.
Pool: Where you do your timed swims, retrieving a manikin from the deepest part of your pool ( which becomes the maximum depth pool you can work in i think- for me its 2.75 metres), rescues and spinal injury management- thats the second most important thing to learn.
First Aid- Self explanatory- they'll tell you to respond to a first aid situation, do a secondary assesment of a casualty, and answer a bunch of questions. Again, the more laid back the assesor is, the easier theyll make it for you.
Nothing's too difficult if your memory is half decent. The main things you need to be careful with are CPR and the spinal work, they are the most severe things, and so to be assesed as competent, you need to treat it as such.
Sorry for the detail. Any more questions, feel free to ask!