This week's book giveaway is in the General Computing forum. We're giving away four copies of Arduino in Action and have Martin Evans, Joshua Noble, and Jordan Hochenbaum on-line! See this thread for details.
I plan to pass the OCPJWSD6 exam in a couple of months. I already have some experiences with webservices. I found the following study material from epractizelabs. What is your opinion about that material? Is this good enough to be fully prepared?