On that point,
Currently I am PR a series of books on accelerated learning my personal favourite is the Business of Memory by Frank Felberhaum.
This is were you begin why do you want to read this book. while my ultimate Goal is to improve my memory but a purpose like that is very general and can only lead to direct learning. However, when you preview the material you get a brief interlude the material has and than you establish a more specific purpose based on the content of the book. e.g when your read the title table of contents, Bold and italised sections of a book. You lock those in your mind and decide whether it is neccasary for you to continue and how does it relate to your initial purpose. You than establish a fixed puspose inlight of the contents of the material you are reading. THis is the formula to the A Ah moments.
THis should however be directly linked with why you want to read the book in the first place. You cannot possibly read on chemistry when you dont even have a personal relation or motivation to read. Getting good grades or a high paid job is good but you need to get specifics search out the meaning.
A more simplified version of purose. Think of PR as driving a car, you can be the most skilled driver but if you do not know where you are going you will be driving the whole day without reaching a unset detination. But if you know where you are going and you know te shortest ways then be sure you will arrive on time. A general purpose in this case would be I want to drive my car but a more specific purose is I want to drive my car to my mothers house.
Hope you understand,
Yours in learning
Bonz