3a(rh)
More with the Thumb.
You can use the thumb to pick out a melody on the bass strings. If the notes you want to play do not fit the roll just stop the lick, let your thumb do the walking and jump back in when it feels right. This will actually make your playing more interesting.
Begin with a C chord in the first position.
Description Fingering Right Hand
Step 1 Left Hand- Start at the third fret on string 6 then the second string frets 0,2,3. 6,5,5,5
T,T,T,T
Next Step            Left Hand