What do I need to prepare for the ACCA CertIFR exam?

Hello,

I just joined Opentuition hoping to get some help on my preparation for the ACCA CertIFR exam. I would be interested in buying some BPP ebooks and other material, but I am not sure what I should buy. I explain better. I don’t know which, among of all the books BPP offers, is the book (or bundle) I should buy. Is there anyone here that knows anything and can help me?

Thanks in advance!

Best regards.