One of the first clues for finding out more about Yoga came from the discovery of the steatite seals in Indus Valley Civilization that took place from 3300-1700 B.C. The steatite seal was actually soapstone formed from the massive variety of Talc. These steatite seals displayed figures that were in various postures of meditation-like; this meditation-like posture was seen as some sort of discipline rituals that suggested the start point of actual practice of Yoga according to the Indus archeologists.
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.
Swami Vivekananda also founded the first Vendanta Society in New York in the year of 1894. All that aside, someone has chosen to fabricate a story that Yoga was first practiced by the hippie movement in the 1960s. That really hurts, because somebody will read it and believe it.
Vinyasa Yoga is more dynamic than a Hatha Yoga class which is concentrated more on static poses usually held for a longer period of time. Practicing only static poses does not reveal the incredible potential of asanas to be explored when linked in Vinyasa.