[Bob LeVitus](http://www.boblevitus.tv.), often referred to as “Dr. Mac,” has been writing about Apple technology for over twenty-five years. He’s written or co-written more than 70 popular computer books, with over two million copies sold worldwide. His most recent titles include: iPad For Dummies, iPhone For Dummies, and OS X Yosemite For Dummies, all for Wiley Publishing.
For the past 15 years Bob has been the Apple technology columnist for the Houston Chronicle, and he’s been a columnist for the Mac Observer for as long as he can remember.