Generally, most yoga classes follow a similar structure; centering & grounding, then a warm up, followed by the main practice which usually includes a variety of postures to stretch and strengthen the whole body.
A focus on connecting movement and breath in between and during each pose can be tricky at first, but it can really help to clear a busy mind and give space to concentrate fully on the practice.
Practice ends in Savasana (Corpse Pose) where students can completely relax the physical body, breathe stillness into the mind and begin to explore meditation.