Ir is clear that this was not written by a professional and therefore NOT published by a professional. I couldn’t get further than the first paragraph and the typos. Perhaps if the writer and publisher would revisit this book and have a professional editor go through it and resubmit the updates, I might be able to actually read it and know what is going on with my MacBook Pro. Very disappointed in this.

Must have been written by a 7 year old. Free? Yes, but how valuable is your time . . . Because this will be a complete waste of it.

It seems this book was written as a 4th grade essay. It's short and the layout is good but I'm not sure why it is here to download as it just states the obvious with poor grammar. Since it is free I guess no harm done.