Good Training Books/Material on FI/CO

Hi,

I have been in the banking treasury business for the last 3 years before getting into SAP and wanting to bridge my knowledge gaps in SAP as far as the FI module goes.

Can I please have advice on which books/training downloads would be appropriate to give me a comprehensive understanding of the system as far as the FI and its sub modules go. I would like to approach it from the techno-functional aspect.

Regards

Gerson D'lima