Good book, reasonably well laid out with a good selection of revision activities. More depth would be helpful in some Cold War areas though. This and the occasionally cluttered layout are the only letdowns.
While clearly stated that this is not supposed to be a comprehensive guide by the author, the booklet appears to lack any real purpose other than outlining very basic ideas regarding the play. It's marketed as a stepping stone to further success and a deeper analysis, but ultimately provides very little guidance to do so.