What I want from books vary.
For school books I normally have two. One to simply know and be able to answer the questions on tests and homework. The other, is for personal development. What I mean is this

Science- It primarily helps me find loopholes and chinks in the “armor” of various subjects such as exposing the weakness of the enemy, or exploiting the sensitive spots of someone or something. By finding that weakness or loophole, I can find ways to fully exploit it to my advantage so that in business, I can ethically exploit that weakness

Cisco, is to increase my technical agility and have my mind work much more like....a computer? lol...

World History to understand the patterns of the past and from it when to do something and when to withdraw etc.

Mathematics- It helps me build a logical train of thought and through it I can learn and develop the mental capacity to make the obvious, logical connections in anything, from home and gaming to business and rule in nano seconds, not years or decades after I am exposed to the question first time around. By this I can use that train of thought, apply it to business and statecraft to maximize performance and minimize expenditure. Then I use my geometric train of thought amplify and exponentially increase the results of that result.
Now, presently, the most difficult areas are Math and Cisco. From Math I want to be able to increase the logical networks within my left brain to in turn, solve and answer any given questions on what we have covered with ease that equals a child's plaything or at least with far more ease.

Everything else I have clamped down with an iron fist......just Math and Cisco keep at pressure..

I ask too general questions.......like the ones provided in a book. I have a small list of 5 logic class questions in the use of my multiple inteligences... They are
1) What assumptions are being made here? (explicit inexplicit and are they true?)

2) What are the evidence of this? (Is this a fact or opinion, if fact are they always true, if opinion can I trust the source?)

3) Can I think of a good illustration or example this? (fits into any class or category?)

4) What opinions and conclusions can I draw from this are they justified by the material

5) What are the unique key and new points

Why I have yet to deploy them, I don't know.