How to prepare for it(group ii--paper 7 )??

I am in little bit in doubts about preparation of IT(and I can prepare for SM) as the book is too big to handle and to read in such short time?? Guys tell me is there any reference book that contains the main topics for Info Technology and how can I prepare for it in such a short span of time as reading Module would be more cumbersome as I am giving both groups in May 2012 attempt and kindly give some effective tips for that subject and if any one of you have notes or good material for the same kindly gimme the link for that :)) Your help will be highly obliged