I'm not a big fan of that kind of analysis. Poker is more organic than just straight maths. It's a bit like try to put a telescopic sight on a sawn off shotgun.
I think that in poker they do not serve the math you can calculate my good your out favor but sometimes luck and take risk can make the difference between victory and defeat
I don't know that book, but the title says essential meaning basics. If you don't know the basics then sure give it a go. Poker is full of people who don't know even the basics from poker math, they are happy to donate some free money to you.