Before learning and chord, first of all, we should have the following points: 1. Master the scale of a tone skillfully. Generally, master the scale of C tone first. First, master the low position 2. Finger flexibility and strength to a certain extent. That is, each finger and horizontal pressing can clearly pop up sound. It can be connected by climbing a grid, climbing a scale of the position and finger types. 3. Have some music theory knowledge, such as interval, sound name, singing name, big three degrees and small three degrees. Without music, of course, you can learn and string, but you can only know what it is and don’t know why it is. So it is suggested that we should study music and guitar at the same time. Preliminary study is rather boring. I wish you success and perseverance is victory.