As others have said, there is some good info in here, most of it useful to people who aren't tech savvy. But there is quite alot of misinformation in this book, and it is not due to it being outdated (at least then, concepts would transfer)
This book encrourages the use of google, demonizes free apps, and fails to further explain much of how the reader is supposed to apply any of these tips into their life.