I have syllabus f9 of kaplan 2009 and exam kit 2014-2015 I am planning to sit on December 2015.Is it ok if I use the old text book?I think no serious changes would have been made and since I have the new exam kit won’t I be ok ?I mean if you get the whole book proper studying (hopefully) no matter if changes have been made won’t I take a necessary knowledge?Please those who know advice me about studying text book what should I be careful . Thanks