This book is a cut-down version of the Traveller ruleset, which enables you to take a look at the system before taking the plunge or to introduce new players to the game - at least, in terms of game mechanics and character generation. It's the sort of thing that might be quite handy to have with you at the table as a quick reference.
There's a very brief overview of what Traveller is, but a single page, before it launches into Character Creation. Here the character creation checklist is given along with the basics of generating characterists, deciding on a homeworld (to determine background skills) and then choosing a career to have pursued before the character turns to adventure and the game begins. It's all quite straightforward and would be clear apart from typo and layout issues that bedevil the entire book, at least the PDF version. Fortunately these are more annoying than actually making it impossible to read most of the time. The prior careers available are Army and Navy only, but these are presented to the same level of detail as in the Core Rulebook, so characters generated with this book will have no issues integrating with a party created using the more extensive choice to be found therein.
The next section is Skills and Tasks. Here the task resolution process is outlined, complete with a few examples and a probability chart (useful for Referees wishing to set an appropriate level of difficulty, or players interested in their chances of success). Then there's a run-through of the skills available, with notes on how and when they will be useful.
Then comes a section on Combat, which provides details of how a brawl is administered using this ruleset. It's somewhat curtailed in comparison with the Core Rulebook's treatment of the subject, but there's enough here for even a novice player to understand what is going on and make an effective contribution to the proceedings.
Finally, there's a section of Equipment. Again this is a cut-down version of what is available in the Core Rulebook, but there's sufficient to see a character armed, protected and with basic gear. There's a blank character sheet at the back once you are ready to give it a go.
As a basic introduction to the game this is all right, but it would be best used in conjunction with conversations with an established player when a newcomer to role-playing is concerned. In print, it is quite expensive for what you get (you would probably be better off just going straight for the Core Rulebook), but the PDF is free and so could be downloaded and given to someone who is thinking of joining an existing game so that they have some idea, at least from a game mechanics standpoint, of what they are getting into. Note that I have not seen the 'dead tree' version, so do not know if the botched type layout is there, but despite the PDF having been updated since its first release, they are still there at the time of writing this review - hence 3 stars, the actual content is worth 4!