This book is the bible to the ambigram artists as it gives an insight into the mind of John Langdon, the co-creator of ambigrams. For those who donot what ambigrams are, they are those words that look the same when looked at from different angles(for eg, the word SWIMS reads the same when turned upside down).
This book will not teach you, how an ambigram is to be drawn or can be drawn. Instead it only gives an ambigram and the thoughts of the author on that word.
I wish an edition to be released which gave a separate section to the ambigrams, he drew for Dan Brown; the creations which inspired Dan to name his protagonist at Robert LANGDON!