this is the main riff and is played through out the song.
E-----------------------------------------|
B-----------------------------------------|
G-----------------------------------------|
D---------------3h5~~~~~--------3---------|
A-------------------------3/5------3/5/3--|
E-------6b---3----------------------------|
[ Tab from: http://www.guitaretab.com/j/john-mayalls-bluesbreakers/91157.html ]
E-----------------------------------------|
B-----------------------------------------|
G-----------------------------------------|
D---------------3h5~~~~~--------3---------|
A-------------------------3/5------3/5----|
E-------6b---3--------------------------3-|
this is simple to play, but contains a fair amount of bends, hammer-ons and slides.
is perfect for novices, it also has a slow tempo which is even better