Here at Yoga Instructional Therapy, we thing that the most important part of learning yoga is to get the right teacher. Simple fact: if you don't know what you're doing, then you're doing it wrong. That can be both a waste of your time, and it could be potentially dangerous to your health if you tweak your back or twist a muscle.
That's why we recommend one of the following training courses. We've personally reviewed each and we think they're the best out there for the price, and it allows you to get involved with yoga from home and learn at your own pace.