Rarely does one see a book written with authority and clarity the way this one is. Author Mark Minasi takes information from his experiences as a computer technician (among other things) and explains problems you may encounter. This book is full of sentences that begin, "I once saw ..." or "This happened to me ..." Rather than explain the differences among different kinds of screwdrivers in the beginning of the book, the author gets right to the point by showing how to disassemble a machine and see what"s inside. Then, there"s a sort of "hall of horrors" for PC components--a section that details how different parts can fail. Quickly, the book moves into explanations of general troubleshooting and problem-solving techniques. The bulk of this book is a series of chapters explaining how to install and fix various components, such as RAM, hard disks, modems, video-capture cards, and audio peripherals. There aren"t a lot of illustrations, but most of the ones here are useful. Minasi wraps up his book with a table of hard drive specifications, manufacturer contact information, and an excellent, lengthy glossary of computer and hardware terms. You"ll also find two companion CD-ROMs, one containing video clips of Minasi"s lectures and the other containing handy diagnostic software. Taken as a whole, The Complete PC Upgrade and Maintenance Guide, Seventh Edition, is an excellent value. The author does an outstanding job of communicating his ample knowledge to the reader.