I am going through the fundamentals. I got through Fundamentals 1 ok, no bother. Fundamentals 2 going well also...but, I get to 12 Bar Blues, and it looks like something that can be easily picked up. BUT...my hand is cramping seriously!!!
I am playing an acoustic, and I notice that the natural position for my thumb is behind the neck, whereas the instructors thumb easily pops up over the neck. The only way I can do this is if my first finger barres the 4th, 5th & 6th string (2nd fret) in order to play the E note on the 3rd string, but I am not sure if this is technically correct. I dont want to start developing bad habits.
Some advice or tips would be much appreciated.