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.
You can also go to http://www.learnkey.com/custom_pages/masterExam.htm to register (free) and download a practice exam. It's very like the actual exam, with 60-odd timed questions. I was got 86% in this and got 83% in my SCJP, so they're spot on the difficulty level.