If you really want to learn well, I suggest you don't go to small classes. First of all, time is not free, there are many people in small classes, and there is no good one-on-one effect. If you study guitar in Xi 'an, there is a September music studio in Xiaozhai. The teacher is very professional and the environment is good. Teachers are very patient. They hold some activities regularly for students to communicate with each other. They also have their own rehearsal room where students can rehearse.