I think that this is a very useful compact guide which would be invaluable if you were planning a trip to Paris. Not only does it provide excellent information regarding the various way to get there, it also gives a lot of information, and invaluable tips on how to do so once you are there.
Written as an advisory guide, the author has listed the 20 arrondissements, or districts, of Paris, with information as to what you can find in them. If you are unsure where to start, he has also suggested the best places to visit in the city and routes for each day, which will help you to make the most of your visit.
There are even general tips which include the emergency services numbers and a chapter on common French expressions.
Basically, this is a very useful and informative guide which would be an asset when visiting this beautiful city.