Thats right.. pick out 20 to 25 words that way... it doesn't matter if they mean anything... to start with they are just words that attract your attention (usually from the headings and subheading or words that appear a lot and you notice it. (Like when you get a new novelity item or buy a car you notice all of a sudden everyone has one). They help your conscious mind connect with the other than conscious mind while you photoread. It is words from the book that you are looking for.
The idea of trigger words to getting a connection with the book and they can be handy when it comes to the activation process... later when you want to activate you ask why that word seem significant and associations can pop up. Sometimes just looking at you list of trigger words and you get activation.
It's a tool. If the word was in the book its a good word. Play with it.
AlexK
