9- Will I learn how to breath with Yoga?

We do not need to "learn how to breath". Look at babies and animals breathing is the most natural and easy thing in the world. Yoga will allow you to release and relax any contractions and tensions  that may block your natural breath particularly in the belly, diaphragm, floating ribs and upper chest. You will develop and cultivate a feeling of inner space and freedom over time. your lung's capacity will enhance and you will feel good and  relax.