Hello!
I would reccomend to read these books:
Configuring Financial Accounting in SAP - SAP PRESS Bookstore
These books represent a good source of information. By the way, I think that you can find these books on some pirate sources - but you will have to spend a bit of time for that.
However, if you would like to read somethink really useful SCN represents a really good source of information with a lot of reccomendations and screenshots. Follow the link provided below to explore the opportunities of SCN search.
Best regards,
The Wirtschaftsmann