Upgrading and Repairing PCs, A+ Certification Study Guide is a hands-on learning book. Author Scott Mueller takes you through test objectives one by one, pointing out the most frequently missed questions and explaining them with a greater detail than easier questions need. Spend your time learning--not deciphering bad writing! Just the essentials! Scott covers the essentials that you'll need to pass the test and point you where to go for more information. Frequent study reminders throughout help you focus and remember the core concepts for the exam--and not the not-so-necessary details. Practice Exams cover the topics that you'll be tested on and asks them in the manner they'll be asked on the test.