How to handle isca in this last moment?

Vivek (G) (43 Points)

18 October 2014  

due to my importance on other subjects i couldnt able to give much importance to ISCA, and im fearing now that due to this i may mess up in my exam...

im bit of overconfident that isca is small subject etc etc but after studying 1st chapter itself im seeing stars. i dont want to fail due to this subject, please suggest my any books or approach in studying isca in this last hours. please help me.