Daniel Berry is a teacher, who has taught all grades from
          Kindergarten through College.
        He also has been designing computer systems and networks for over 20 
          years. He instructs in the following Operating Systems: Mac OS X, Windows 
          XP/7/8/8.1, Chrome OS, Ubuntu, Zorin, iOS, and Android. He currently 
          has courses in which he teaches Microsoft Office 2003/2007/2010/2013, 
          A+ Computer, Networking, Web Site Designing, Operating System Management, 
          and Cross Platform Data Coordinating.