Yes that is the book. I have the same book. Imo It’s a great book for the beginners and for the intermediate users. Phil Chambers has a very nice style of writing, it’s very easy to follow and to understand. You’d perhaps have to read it a few times if you are a beginner. He talks about the Semantic and Episodic memory, and goes into details of how a piece of data is memorised. The Seahorse acronym is how one person can actually train to have a better memory, it’s well thought.
He also has 8 mind maps that summarise the book and covers all the methods. That alone is worth buying the book for.
I have many books on memory, and this is one of my favourites.
I’d also recommend Mastering Memory - 75 Memory Hacks” By Brad Zupp
It covers daily life, school, and work, each with 25 memory hacks/methods.