Do not confuse anymore about mindfulness breathing.
I would like readers to read from
Mindfulness of Breathing by Bhikkhu by Nanamoli
Manual of Mindfulness of Breathing by Mahathera Ledi Sayadaw
Sorry, Guys. This book is a bust. I am a big respecter of Buddhadasa (the author's teacher), and I have read most everything he wrote. However, Buddhadasa's description of the 16 step method is inadequate to learn to practice by. (I have been practicing for 30 years, and the Pali does not trouble me at all.) I bought this book by Buddhadasa's student with great expectations, but it did not fill the bill for the 16 steps. Instead, I suggest you get "Breath by Breath" by Larry Rosenberg (who personally learned the method from Buddadasa). Alternately, and just as good, get "Breathe - You Are Alive" by Thich Naht Hanh.