Thanks brhynold and Jkawatra for the information. It appears these Oracle's Instructor Lead Training books are a must for preparation. Actually I am based in south India, so now the problem is how to get my hands on this stuff without blowing a hole in purse. Are there any training Institutes in India(south) which provide this material? If someone can give me this information, it will be of great help to me.

Thanks in advance
Shubha