Looks like no one has used the book. That should tell you something. Now Mel Bay published good stuff. So IMO Mel Bay will not publish anything that would be harmful.
Finish the book you'll get something useful. I have many books, some I get a lot from others I only get one or two things, I have yet to buy a book that did not teach me something.
I do re-visit some of my books and in doing so I pick up new things. I was not ready for what it was talking about way back then, now I understand how that can/could be used.....
Is this the book you are talking about
If so I had it and gave it to a friend. I would not have given it to a friend if it was not good. As I no longer have it I can not go into detail with you.