Yes you can use it if it is till december 2013.I have used bpp in all my exams . It is good but it depends upon you if u prefer bpp go ahead but if you prefer kaplan go ahead with kaplan. Best of luck
It depends on which paper you are taking in Dec 13,otherwise I advise first to see syllabus changes in 2013.If the papers you are taking there are minor changes then you can still use 2012 text and viceversa again watch out for Tax,law variant (from Malawi)