Little and often is key. 10 to 20 minutes of barre chord training 6 days a week is ideal.
If your hands start to cramp, then this is normal. Take a very quick break and then resume. Your hands are going to hurt but this is all part of learning barre chords.
You should already know how to play an A, D and E chord.
This course will take you between 2 – 5 weeks depending on your previous experience.
