Patanjali's Yoga Sutras have been translated from the original Sanskrit Devanagari Script, to English, many times - and in many ways. The Yoga Sutras, themselves, are precisely organized in padas. The best cross-reference to the term "pada" is chapter. Below is a brief overview of the four chapters of Patanjali's Yoga Sutras.
Despite what you learned in Yoga teacher training, there are many who practice Yoga for the physical benefits only. I'll never forget the first-time experience of teaching Yoga in a commercial health club setting.