This book contains both Hindi words and phrases which will be a useful asset for trips to India. The book also contains conversational Hindi a tourist might find useful, for instance when they are shopping, booking a ticket, at the hotel, dealing with beggars, at the restaurant, and so on.
So, if you are traveling to India then this is the book to take with you. Or perhaps you are a student and planning a study trip to India then this book will be useful too. Perhaps you are learning Hindi and you wish to add something "extra" to your existing resource - or just simply you want to polish up on your Hindi.
The book is for those who do not have previous or very little knowledge of Hindi. Don't be a stranger in India - learn some Hindi.