I don't understand how you could come up with "scratch." The bottom of page 123 is the answer to your question....where you visualize yourself already having mastered and using the new skills/behaviors you want from your books.
Knowing all of the characteristics of the new skill/behavior is necessary for the Direct Learning process to non-consciously activate them from books you PhotoRead, which speak authoritatively about the subject. Practical, how-to books.
The Natural Brilliance book says it best:
"Activation with Direct Learning provides a way to respond without trying to respond differently. Because Direct Learning changes behavior wthtout your conscious intervention to change your behavior, it breaks the cycle of your paradoxical problems. The change occurs indirectly from inner wisdom working beyond conscious logic to solve your problems. It is paradoxicaally perfect and ideally suited to your life."
For complete details, see pages 15,110-115,120-127,154 of the Natural Brilliance book.
It's a ridiculously simple process, and it bypasses the opportunity for your conscious mind to interfere with integration.
It's better to use multiple references, so you get multiple angles.
For that engine overhaul, I used only the Haynes manual, because it does a very good, thorough job of teaching you the procedures. Lots of pictures, connect the dots, (j/k)
So far, I've put over 20,000 miles on that motor, and no problems with it. 
