Hello. Do you know anything about  the Indian tradition of yoga?
I would love to know more, I do not know too much. 
I'm a yoga instructor. It's an amazing workout for your spirit and your body
Is it hard to start? I would like to learn how to teach it too. 
I think if you started studying Hatha yoga, one of the more well known types, you could probably become a teacher.
Is that the first style I should try to learn?
Yes it's the branch that stresses mastering the body and mind. I recommend it.
Do you have any other pointers on other style I should learn soon?