I just started the finger picking lessons with Lisa McCormick. My question, which may be answered in upcoming lessons, is how do I know which string to play in the 4 step pattern? For example, the 4 strings for the D chord are common sense, but say its a C chord, them I have 4 notes and 5 strings to choose from. The root note makes sense, but are there rules on which of the other I should play? or is it based on what sound I want? Looking at the G chord, there are even more options it could be. Just curious.