Playing this familiar tune without a capo is a rewarding challenge. It will open new things for both rhythm and lead. Most of this tune should be played in second position. That means your first finger should stay mostly on the second fret. Second finger will cover notes on the third fret. Third finger will cover notes on the fourth fret. Your pinky will cover notes on the fifth fret. Excluding the licks, the only time you need to shift is in the last measure of each section. In that case, just make that 1 fret shift backwards while an open string is ringing.