Not sure what reading any book towards the strategy of poker can do to help your game to be honest aside from the mental preparing beforehand and stabling yourself to be as free from tilt as possible
What are they going to say that is going to be so mind blowingingly unique that is worthy of buying their book or any other on how to play hands etc.
IMO play within your limits and play long hours as many hands as poss and try new things all the time and from that expereince try then to stick to what is most effective, that is the way to get better.
Helps you see how others think and approach the game? We all have different strategies and approaches, and it's even interesting to see how losing players approach the game to see where the flaws are in their game for you to exploit with other players who play the same way.
I played a lot of chess when I was young, and would read books written by people who I thought approached the game completely arse-about-face - but I could still learn something from reading their thoughts. I'm still of the opinion that reading a poker book can help your game, even if it's only slightly by making you consider a certain aspect of the game and maybe revisit your own thoughts on that element of the game.
I'm not a great player (ldo), so there's always something I can pick up from a book, forum, conversation that helps me improve my play.