Approximately 64 out of the 110 pages of this slim book are dedicated to the detailed description of orthographical conventions and peculiarities of the various scripts used to write Turkic languages in the first millennium AD. On the other hand, there is no discussion about the grammatical structures of the Turkic languages, past or present, to speak of. There are a few pages touching on historical phonology that exist to support the author's views about the correct periodization of Turkic.
It is very odd and disappointing that a book which bills itself as introductory dedicates so much space to the minutiae of a topic (i.e. orthography) that would be most useful to those at a more advanced stage in their studies and no space to a topic (i.e. language structure) that would generally be of more use to a novice.
The first half of the book, which deals mostly with early Turkic history and very briefly with the genetic affiliation of Turkic and other Inner Asian languages, is good and appropriate for an introduction to Turkology. But as explained earlier, things go downhill from there and the author seems to have either forgotten who his target audience is, grossly miscalculated their knowledge base and the gaps they're looking to fill, or been the victim of an editor foisting an inappropriate title onto his book. (This last possibility is very unlikely to be the case, though, as the book does not seem to have had an editor at all, given the frequent typos, ungrammatical sentences, etc.)