Nursing books/nursing Nostrifikation (Vienna)

Hi all. I am in need of help and advice if anybody there has been through what I am going through at present. I need to do a nursing Nostrifikation and pass this 4 subjects. Can someone please tell on how they studied and prepared for it. I need some
Nursing 'Pflege Heute' books if anybody knows where second hand nursing/medical books can be bought. Thanks in advance for your advices.