Yoga Sutra 2.1
तपःस्वाध्यायेश्वरप्रणिधानानि क्रियायोगः॥१॥
Tapaḥsvādhyāyeśvarapraṇidhānāni kriyāyogaḥ||1||
Burning zeal in practice, self-study, and surrender are the acts of yoga.

In this class we are following the IV Course program from Silva, Mira & Shyam Mehta's book “Yoga the Iyengar Way”. This is an intermediate level class. Minimum Props: 1 chair, 3 blankets, 1 bolster, 2 blocks and a belt
It would be very helpful to also have: an extra bolster, 2 extra blankets, a second chair and an extra belt.