Well you will have to read the book from the first chapter normally. If you are new to java, then you can go for some other book like Java the Complete Reference or Thinking in Java or Head First Java. That would be a better way to start then K&B book.
Can anyone tell me from which chapter i have to start preparation
Because i started to study K&B book five days back.But still i haven't crossed the first chapter.
From the first chapter..
And no matter how many days it will take to finished the book, it's about how much you grasp and understand the concepts. So my suggestion would be, don't turn the page unless and until you got it thoroughly.