If you are new to Hatha Yoga, there’s a lot of good introductory information on this ehow.com website:
The word “Yoga” comes from the Sanskrit root “yuj” meaning “to bind, or join.” Yoga is centrally the practice of union, whether you are joining the mind to the body, the human to the divine, or the individual to the infinite. The various styles of Yoga that have made it to the West all share a common core: positioning the body into a particular posture while focusing mind and breath leads to physical and spiritual well-being. These arts of positioning the body have been passed on for thousands of years, and encompass one of the oldest cultural traditions known to exist. To practice Yoga, then, is also to join with the ancient sages, drawing human history up into yourself and connecting with the past.
In this free video series, longtime Yoga practitioner Howard Davis teaches basic postures of Hatha Yoga. Howard gives full demonstrations of poses like downward dog, bridge pose, child and corpse poses, and more, but he also offers insight into how the body will respond to these poses. He lets viewers know what might be uncomfortable and how to deal with it. Howard also gives variations on poses and offers the insights of other forms of Yoga alongside the hatha postures. http://www.ehow.com/videos-on_1560_basic-hatha-yoga.html