You'll all do fine, they were really easy when I did mine three years ago, and they'll probably be even easier now. When we did the mocks they gave us papers from 5/6 years before, which were far harder, so we'd all fail and work really hard. I did revise, nothing like as much as I should have done though, and I came out with 3 As, 5 Bs and 3 Cs. Get revision guides and start working through them now, then in the week before the exams just keep leafing through them to keep it fresh, you'll do fine! EDIT: It might be an idea to get your coursework done during the year though...