The purpose to become an accountant is a good why. There may be more after that he doesn't need to explain it to us. The why is known if you can say to be an accountant.
Now that you have a purpose you have a reason to get serious about the book.
suppose my purpose is to understand the concept, while activating if i come across something which does not satisfy my purpose but could be useful should i read it or skip it?
To understand a concept is not a purpose. Why you want to understand a concept is a purpose.
The answer depends on what was your mind probing question. A quick dip is all it takes. If it's not relevant at least you know where to find it when you need it. Remember to keep dips short. Phrase or two maybe a sentence or two.
You're on the right Track with mind probing questions but don't limit your questions to what? How it applies, when it applies, where it applies who needs to know or who does this involve and a strong one *Why*
[quote] Your questions must be based on trigger words.[/quote[
Not true. trigger words are triggers, Not the limit of your questions. They are only starting points. In fact in most cases I rarely use my trigger words for questions. They are like letters in an alphabet soup you look at them and let the mind push them around and from there it builds playful curiosity, if you allow it. They can lead you to look at certain sections from which you want to know more and from there you form questions.
AlexK