This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
I just learned how to use xml with oracle. I found technet.oracle.com to be very useful. For both simple xml and integrating xml with Oracle. The technet account at Oracle's site is free, just sign up.