吉他指板知识课程
| Level | Title | Topic | ID |
| 初学者的吉他和弦练习 - Campfire Chords | 和弦 | FR-03 | |
| 吉他音程图 | 音符 | FR-11 | |
| 吉他三和弦列表 (大调) | 和弦 | FR-04 | |
| 吉他三和弦列表 (小调) | 和弦 | FR-05 | |
| 吉他Sus2三和弦表 | 和弦 | FR-12 | |
| 吉他Sus4三和弦表 | 和弦 | FR-13 | |
| 初学者的吉他和弦练习 | 和弦 | FR-01 | |
| 吉他的C大调音阶－八度 | 音阶 | FR-02 | |
| 利用八度音来记忆吉他指板 | 音符 | FR-14 | |
| 怎样弹奏大横按（简介） | 和弦 | FR-15 | |
| 大调音阶和大调五声音阶 | 音阶 | FR-06 | |
| 小调音阶的弹奏方法 | 音阶 | FR-16 | |
| 一个八度中平行调式的指法 | 音阶 | FR-17 | |
| 开放和弦和挂留和弦 | 和弦 | FR-07 | |
| 五声音阶的指法 | 音阶 | FR-18 | |
| 怎样弹重力和弦 | 和弦 | FR-08 | |
| 吉他的半音音阶模式 | 音阶 | FR-27 | |
| 怎样弹奏C调七和弦？ | 和弦 | FR-19 | |
| 一根弦上的E大调音阶 | 音阶 | FR-09 | |
| 和弦进行的循环 | 和弦 | FR-28 | |
| 怎样弹大横按：CAGED System | 和弦 | FR-20 | |
| 初学者的吉他和弦练习 - Campfire Chords Pt 2 | 和弦 | FR-10 |
As the creator of Hub Guitar, Grey has compiled hundreds of guitar lessons, written several books, and filmed hundreds of video lessons. He teaches private lessons in his Boston studio, as well as via video chat through TakeLessons.