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 used Whizlabs 1.5 and I think it's great. If you pass those exams, you will certainly pass SCJP 1.5. In my case, I took 5 exams from Whizlabs and SCJP passed on higher score then every exam from Whizlabs.