Tas been a while but knowing your AIPS back to front helps. Try not to go mad on tags and all that jazz. To many pink and yellow tags will all be a blur with 5 mins to go and a question about say 'DME ARRIVALS'.
Know weather and icing related stuff as this can be wasted precious marks at the end of the day.
Know also your ERSA and the part on prefered route tracking to some places.
Good Luck