If this book were truly representative of "the once-secret Russian method of chess training" no Soviet player would ever have become a grandmaster in the entire course of chess history. This book simply does not live up to the hype. Keep in mind as you read the following that according to the authors the alleged goal for these books is "to provide the knowledge necessary to reach expert strength." Nobody is going to reach anything remotely near expert strength using this book or its companions.
My complaints are numerous:
[1] The material oscillates between being absurdly simple for the alleged target audience to being absurdly unclear. For example, at one point they explain what a pin is. Elsewhere, they provide a complicated example from the Fischer-Spassky 1972 match with absolutely zero commentary.
[2] The examples are too many and too sparsely commented (many have no comments at all) to be of any use to a student trying to learn from them. As just one ridiculous example, page 180 contains a 19-move analysis with a single comment ("now follows a beautiful variation"); well, thanks, that was very useful. The famous game Lasker-Bauer, Amsterdam 1889, merits comment to only one move as well.
[3] Many of the examples are downright useless, consisting of a single move. We are given no indication of how the position was arrived at or how the magical move (1. Qa7!!) was arrived at or even why it merits two exclamation points.
The bottom line is if you are rated below 1700, you will not learn anything from this book, so try Jeremy Silman's or Yasser Seirawan's books instead. And if you are rated above 1700, you will not learn anything from this book either, so try Dvoretsky's well-respected series.