The obvious answer is that it is aimed at somebody who, although they are already an embroiderer with a good working knowledge of the basics, is not a goldworker.  Therefore you can expect some full descriptions of all the methods, complete with photographic stages that are easy to follow.  Expect, too, the usual list of items you need, which seems to include everything you are likely to want without a lot of expensive extras—surely the sign of a good craft book.  At the back are several attractive projects, designed to put you through your paces and provide heirlooms for the future.  This is not one of those primers where you waste your new skills with practice pieces that nobody is going to want to keep.  Instead these are timeless pieces that would not have looked out of place in past centuries, but which also appeal to modern tastes.  If you are familiar with Inspirations magazine, you will know what to expect.  A keeper that is destined to become a goldworker's staple I should think.

If you cannot find a good range of goldwork and silk embroidery threads locally try SearchPress.com for a list of suppliers.