There are a lot of levels of knowledge that you can require in virtually every single thing that you would be looking to accomplish at this current point in time, and it would be best if you familiarized yourself with these levels so that you can understand how long it will take before you can finish them in the first place. Yoga is a type of practice that is helping all kinds of people get healthier all around the world, and as a result of the fact that this is the case the people that are responsible for teaching this yogic ritual will likely be paid a salary that would be more than enough to cover most if not all of their expenses on a monthly basis.
Once you have acquired enough master of yoga to start teaching others, the next level that you would ideally want to end up attaining sooner rather than later would be that of a teacher trainer without a shadow of a doubt. Teaching the people that will go on to teach yoga to consumers and customers is a very advanced level of knowledge, and only Marianne Wells RYT200 will be sufficiently challenging enough to give you the chance to become competent enough in this respect.
That said, since this is a really advanced course suffice it to say that you would need to practice yoga for at least three months before you can move on to it. This is enough time to allow you to understand the deeper nature of what yoga actually entails instead of just working with a surface level understanding that really wouldn’t be all that useful in the long run.