HI! I am going to attempt the NOV 2010 IPCC.. Can someone guide me if it is necessary to buy a book on latest SAs or shall i just download from net? If book is necessary, which book? And is it advisable to buy now, just in case some new SAs come out which are not included in the May2010 exam but are there in the Nov2010.. So shall i buy later or now??? Pls help... Thnx in advance!!