Doyle’s book was a game changer when it came out a few decades ago but it’s pretty outdated these days with everything we’ve learned about the game since then.My advice would be for you to read Doyle Brunson’s Super System. Guaranteed to make a difference in your play and outcome.
For those interested in a good read (and a great correlating podcast), I HIGHLY recommend checking out Andrew “Thinking Poker” Brokos: