Hi, so basically I did legitimately no work in Eco Premlim, walked into exams with no textbook knowledge and just tried to answer the questions on the spot, still beat 50% of the people! So I'm doing HSC now and I don't know any prelim content, was wondering if there was like an excel revise in a month for prelim or some short book to revise. Alternatively, does the HSC just assume you have no knowledge and works from scratch?