The document provides a review of topics covered in lessons 3, 4, and 5 about computers. It lists steps for troubleshooting a computer and poses questions about upgrading hardware, how language translators work, downloading software, productivity software, the first computer DOS was installed on, icons on the desktop, the graphical user interface, multitasking, interfaces, software and how it works, the first computer with a GUI, application and system software examples, software development, adding hardware/software, booting a computer, selecting files, windows, running multiple programs, moving/copying/deleting files, installing programs, and parts of a window.