I practise yoga and enjoy it a lot, here are some sites that I find useful.
Yoga Journal is an excellent site about Yoga. They have great newsletters too.
Yoga at Wikipedia has general information about yoga plus links to other yoga-related articles at Wikipedia.
Yoga Basics is an online guide to the practice of yoga, pranayama, postures, poses, asana, breathing, meditation.
Yoga at about.com is another useful site with Yoga Photo Galleries and an Index of Yoga Poses
