Faithe Wempen, M.A., has been educating people about computers for nearly 40 years. She is a Microsoft Office Specialist Master Instructor, an A+ certified PC repair technician, and the author of over 160 books on computer hardware and software, ranging from Computers for Seniors for Dummies to CompTIA A+ Certification Study Guide. For nearly two decades she taught computer hardware and software architectures at Purdue University, and she currently designs custom online technology courses for several leading online schools. Mike Meyers is the best-selling author of numerous books on computer literacy and certifications, including CompTIA A+(R) Certification All-in-One Exam Guide, CompTIA Network+(R) Certification All-in-One Exam Guide, CompTIA Network+(R) Guide to Managing and Troubleshooting Networks, and Mike Meyers' CompTIA Security+ Certification Guide. Most consider Mike the leading expert on computer industry certifications. He is the president and founder of Total Seminars, LLC, a major provider of PC and network repair seminars for thousands of organizations throughout the world.