We can frame a verbal question from the sentence as follows: Does this mean that the book is not primarily focused on grammar and tech?
What is a verbal question?
A verbal question is a sort of inquiry that is meant to gauge a person's understanding of concepts. So, in the first sentence, we have a simple statement and we are told to render a verbal question from it.
There are different ways to for the question but one notable expression would be; Does this mean that the book is not primarily focused on grammar and tech? This will allow some sort of reasoning before a response is provided.