弹吉他G大调与E小调怎么练习?十二品格音阶图谱视频教程如何自学?

吉他入门教学《吉他G大谳与E小调》：#ad#/arcad/jitarumen/jitarumen_up.html#ad_ed#

#ad#/arcad/jitarumen/jitarumen_down.html#ad_ed#