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Gordon Davisson has spent over 20 years working with Apple hardware and software. Over the course of his career, he has owned an Apple reseller, designed and implemented networking solutions and taught multiple Macintosh and OSX classes, and acted as a consultant on Mac systems. Gordon is an Apple Certified System and Apple Certified. He also enjoys sharing his knowledge through various online forums and discussion boards and has contributed to or written several other books including Mac OS X Support Essentials v10.6 and OS X Lion Support Essentials Student Workbook.