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.
Just visit the official OCAJP7 page and then click on Purchase exam voucher from Oracle University. You'll be automatically directed to the appropriate voucher. This way you don't have to worry about ordering the wrong voucher.