From my own views; I can't see the need for Excel unless you are teaching other people, if you intend on using it for yourself your thinking of things way too much! Just get a confuser and book for the exam you are studying, read it cover to cover two or three times and do the test in confuser. Revise areas which need attention and repeat as desired. You should get all exams out of the way in the winter i.e. before Feb. Good Luck!
