Senior Iyengar Yoga teacher, John Schumacher, has a new video out teaching Parivrtta Parsvakonasana (revolved lateral angle pose).
His instructions are always very good -- very clear and concise. Follow along with his instructions! This isn't an easy pose, but well worth the effort!
He has a number of short one-pose videos on YouTube. To find them, either go to YouTube and search "John Schumacher", or for a compilation of a few of the basic poses he covers, click on Yoga Poses. Watching and practicing the individual poses from these videos is a great way to understand each pose better.