The brush-up course will address or at least highlight any weak areas. Rote learning is not ideal. Undedrstanding is the key. Repetition over time is what gets things into long term memory. Relax and review. Do not rely on "learning the answers" the question bank is vast and questions appear often that you may not have seen. You will tackle them best if you understand. Take the 3 weeks to structure a learning and review process for whichever exams you intend to take. Remember "RTFQ" Read the Flaming Question and "DAFP" Draw a flaming picture. You will have the knowledge if you rehearse ways of accessing it. Read Tony Buzan "Mind Mapping" and speed reading techniquesand for aids to memory and revision. Good Luck - you will be OK, STAY POSITIVE!