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.
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There probably isn’t a best tutorial; something you can understand would be best. I would recommend you get something from a reputable University, because there is so much poor quality stuff out there. I don’t know a video tutorial I would recommend, myself.