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 received the paper based voucher by mail, but the code is good enough to schedule your exam with prometric. Just ring them up and give them your voucher code number and answer few questions and that is it.