Been a couple of years since I did it but I doubt it's changed much. Basically you just want to make sure you have a rough knowledge of recent events and issues for the long-answer questions and waffle your way through it. The short-answer questions are relatively simple. I can remember one question from the science paper I think that was the fox/chicken/seed/boat logic problem. Made me laugh when I saw it lol. Overall I wouldn't worry too much about it as it's just a waste of time.
Actually, that might have been for the A2 papers. I can't remember hehe.