This book was a good book to read, especially for those Catholics who are considering attending The Traditional Latin Mass, or Mass in the Extraordinary Form. As a note however, this is written prior to the 1962 Mass. Therefore, while it is largely consistent and unchanged, there maybe parts that either were omitted, edited or put into the Mass compared to what this author wrote about.
As a recommendation, I would read the book in the Reverse form of what the author had written, by that I mean, I would read The Third Part of the Book (Ordinary of the Mass) first, then The Second Part (Canon of the Mass), and finally the First Part (Explanation of the Holy Mass), especially if you find yourself learning as you go. To compliment this book, I would certainly say getting your hand on the 1962 Missal and then comparing the two books when it comes to the Rubrics would be most helpful and enlightening to help you get Spiritually Online to the Holy Mass of the Extraordinary Form.