For less than 20 dollars, you get some personal (not personalized) lessons from one of the US and former USSR's strongest players. The book consists of 25 games played by Gulko over the last 40 years with a conversational analysis for each one with co-author and clinical psychologist Joel Sneed. The main instructional mechanism is the identification of certain key positions where Joel provides his own analysis of the current position. Gulko in turn provides comments on not only Joel's selection of moves but also the correct considerations for the position.
So, what can a chess student get from this kind of dialogue? First, Joel is a decent player with at least average tactical vision, but suffers through most of the book with incomplete or faulty analysis. In simple terms, this is your every day tournament player wanting to improve. Often GM Gulko reminds him that his calculation must be complete with the right assessment to be competitive with a high level of competition. Also GM Gulko really has a knack for providing insight in when to calculate. This is the age old question dating all the way back to the book "Think Like a Grandmaster" which was a great book with lots of bad analysis advice. This book really bridges the gap because Gulko is looking at specific positions and explains the pitfalls and even at times the temptations that might lead to allowing your opponent to equalize, or perhaps losing the chance for the initiative, or perhaps in some cases dangerous points where prophalatics are required to keep the opponent without counterplay. These are all the standard chess lessons you might see in hundreds of books, but in the context of a lesson with an aspiring player, the points are insightful without sounding overly preachy.
Okay, so some minor points that didn't detract enough from the evaluation to reduce it from 5 stars ...
1. The binding separated from cover ... but I did read the book from cover to cover so maybe Everyman just doesn't build its books to last
2. GM Gulko sometimes ends his assessments without what I would call sufficient justification
3. Dr Sneed attempts to factor in psychological elements but in my book, it really doesn't come off as anything more than a college psychology project
4. GM Gulko's comments on psychology tend to be the lessons most chess players already know
But all in all, this is a very enjoyable book and definitely worth the time and money. Another excellent book that teaches positional evaluation and calculation is Chess Blueprints, a strong 5 star book. Lessons with a Grandmaster is targeted for all club players, this book however is probably better suited for the stronger club player.