Really Yoga is very Vast subject.

But this app teaches you Yoga in almost 20 days.

So much people learning Yoga from teacher and spending money and time of their life but they can't learn proper Yoga.

Here is solution.
You can learn Yoga from "Yoga" android app free.
Just Install , watch video lectures and Learn all types of Yoga. But Practice is most importent.

This app is totally free.