In reply to Snugglebunny:
You'll be given a map and orienteering card, and expected to find five or six ( I can't remember exactly how many) points, marked with orienteering markers on the ground.
Timings are based on Naismith's rule from what I remember.
Best bet to practise is to do just that, mark 5 or 6 features on a map then go out and find them whilst timing yourself.