Unfortunately my experience with this book is that it is only mediocre at best. While the book's cover claims to teach you how to make money from mining shares, in reality it only barely scratches the surface on what you need to know to really evaluate mining shares.
For example drill results are a large part of the mining game and this book doesn't cover how to make rough estimates of how much mineral is in the ground based on those drill results. Not in any meaningful detail at least - there's perhaps a few paragraphs on this, but nowhere near enough detail) Since probably 80% of all companies in the mining sector are non producers you're automatically excluded from 80% of the opportunities out there (unless you wish to take a major gamble and invest not knowing whether the set of drill results were great or not)
The book does however teach you how to value shares given forecast company cashflows using concepts such as the PE ratio, NPV and IRR, WACC and EVA. This is useful information, if you read mining share broker reports you'll know their valuations revolve mainly around PE's and NPVs. Still there's only a small chapter is dedicated to this, and I've found some free websites do a better job of explaining these concepts.
What the book does cover quite well is general knowledge in the mining industry - such as, what each commodity is used for, what the Poseidon and Bre-X sagas were about, and a bit about individual companies like Rio Tinto and Anglogold. Here again web resources here did the job equally well or better.
Recently I was looking at Rio Tinto's prospects just for interest. I found the USGS website to be a better source of data than the book for commodity profiles, and Rio Tinto's website a better soure of information on the company's operations.
In the end I'd suggest this book is okay for someone taking an idle interest in the resource sector, but if you're dead set on making money out of mining shares this book is just about completely useless. A much better one is Victor Rudenno's "The Mining Valuation Handbook" - which covers more practical topics such as how to estimate capital and operating costs for a particular mining operation, explanations of difference mining styles (e.g. block caving, stoping, etc), and generally things that affect the economics of a mining project, and for an investor that's the thing that really matters. If your company has just reported a blow out in their strip ratio Coulson's book just couldn't tell you to what degree this would affect company costs, or to what extent the lack of infrastructure would impact on the company's new mineral discovery. The book for me has been $50 very poorly spent.