Law paper failure

I had written PCC May 2010 exam.I cleared 2 nd group.I had prepared a lot for 1 Gr and attended Nov 2010 exam.I had written 1 st two papers well.I xpect 45+ marks.I ve written Law paper badly due to poor preparation/revision.I couldnt identify which sections the cases relate to,i completely forgot ethics & communication,i xpect i wud fail miserably,i dont want to waste my time waiting for results & start preparation today onwards,i had referred to L Jayaraman' s notes/book (one who takes coaching in chennai,hyderabad) ,it does not contain case laws/examples.it contains only bare provisions,i think i selected the wrong book for preparation which ll lead to my failure,i want advise to prepare well for Law,Ehics & Communication,Shud i refer to another book,i am also afraid that if i study something new,i wont b able to study it fast,keeping in mind the above pts pls advise