You can find some basic free study notes @
Guide to Islamic Banking prepared by the first Islamic Bank of Pakistan Meezan http://www.meezanbank.com/gib_toc.aspxYou
A Basic Guide to Contemporary Islamic Banking and Finance
Mahmoud Amin El Gamal
Rice University
June 2000
http://www.witness-pioneer.org/vil/Books/MG_CIBF/default.htm