@tx42
Hi there mate. No, I don´t know of any book, I think there isn't. You have to study the charts and check the TPO chart for that period you are studying to see where the price was in relation to value area, etc... It is gonna be your own personal exploration.
I think you are gonna shoot yourself in the foot if you start getting paranoid about going deep into the reasons behind the price movements other than coming to logical conclusions via price action and volume, you don't need anything else. As Tom Williams used to say, we are not interested in the "whys" and "wherefores" of price movement, we don't care. It is just information overload anything more than the high, low, close and volume info. It is not gonna give you any edge, it is gonna make your brain get tired faster. I really don't know why people wanna trade staring at a DOM with all those numbers flashing and changing and picturing a chart in their heads, if they have a freaking charting software in front of them... I almost get a seizure doing that lol... If you wanna focus on the order flow then study the footprint chart, there you have the trades that ACTUALLY HAPPENED, in the DOM those are just potential orders that can be deleted any time, called spoofing.
The only thing you need to know is recognizing the smart money activity, the reasons do not matter, if they started buying is because they thought it was a good price to buy, if they started to sell it was because they had a decent profit already, also do not matter... You just wanna follow their steps.