[SpiderMnkE]

Seems like you will be at the table for a while. So you can watch once and see what the tell means.. then sticky note it in your brain. This guy soft checks when he is weak. If he does it twice you are probably gunna know what it means a third time.

Without the book.. you might not have even cared to notice how he checks. So the stuff might be useful.

Also.. I play online and have never read the book. But just the fact that you are discussing types of tells means the book must do something. You now have more things to look for and think about.