2. "Teaching the pitch" means to adjust the incorrect pitch of each string to the standard pitch; as for "tuning," it should be to set the pitch of each string to the standard pitch, 1-6 The strings are: treble 3, 7, 5, 2, 6, and bass 3.

3. A metronome is used to control the rhythm when playing the piano. There should be another mode in the manual, which is a metronome, which is a rhythmic sound of "didi-dip-dip" (it sounds according to the parameters you set, such as: 60 beats per minute).

4. I hope it can help you. If you still can't, you can find a guitar teacher to teach you. O(∩_∩)O~

5. I have just started learning the piano and playing chords is difficult. *** progress together. O(∩_∩)O~