Books for FICA/ PSCD?

Hi there,

            I am new to FICA ( or to SAP as a whole in fact) . I have been reading a lot of material regarding FICA and PSCD, but without a proper structure. I have been looking for a book to use as a guide but I haven't found anything. I checked and the majority talks just about FI leaving just 10 pages to FICA. Can someone recommend one? ( or severals)?. I will still use SAP website of course, but I am looking for something with a little bit more of structure and with explanations ( no only config ) .

Thanks a lot,

Alex