Easy Thai is the perfect introduction to learning the spoken language of Thailand. This basic and simple approach uses lessons which incorporate review lists and exercises with answer keys.
I would describe this book as an introduction to the Thai script rather than a book for learning the colloquial spoken language.
I learned spoken Thai through Colloquial Thai but needed to learn the script in an easy way, and overall I was pleased with this book. You learn the consonants and vowels in a gradual way, training your skills through translations and other exercises. I would have liked more coverage of the tone rules, the book teaches the essential and most important rules, but not all rules are included. Some people don't mind this, I do.
So for learning the most important parts of Thai script this was a good book to use, if you want a really comprehensive book you need to look elsewhere.
I bought this book sometime between 1973 and 1975, while I was in grade school, between grades 3 and 5. This was purchased during a weekend trip to the local mall. This was the first or second book I purchased under the Charles E. Tuttle Company book imprint as a paperback for language reference.
Other reviewers have indicated and emphasized that this is NOT a book for learning the colloquial language, nor was it a book for travelers in the country, and nor does it presently contain copious amounts of specialized communicative vocabulary for particular purposes.
It is, however a very basic introduction to the general rules for reading and writing the Thai language, and how consonants and vowels are placed together to form words.
I own the original 1969 edition, which has a different color cover and design, but was still issued in paperback, as was intended by the original author.
This book does perform and fulfill its original purpose when others of a similar nature are not available for use. The same holds true today. For me, this seems some fifty years too late.