I bought this book because I though the author had a funny approach to the subject. I started reading it and I found it had a nice sense of humor. However, after reading 5 chapters and not getting any significant knowledge about MAC OS X, I felt the book really felt short of its main purpose. As a comedy book is great especially for computer geeks like me, but man...no meat on this one. The chapter on troubleshooting is basically "DO NOTHING"....what??? Buy the missing manual from David it is a much more comprehensive book. Not as funny, but you actually get pretty good at learning MAC.