This week's book giveaway is in the OCPJP forum. We're giving away four copies of OCA/OCP Java SE 7 Programmer I & II Study Guide and have Kathy Sierra & Bert Bates on-line! See this thread for details.
That depends on the specifics. Are you talking about one particular page on one particular site? Several pages? Several sites? Is the layout of the page(s) predictable? Are there ID tags on which you can rely?
You will need to do some coding, but the libraries I mentioned will help you get started.