If you look at modern classical guitar tutor books, the majority start with fingers plucking the upper strings 1, 2, and 3 (thumb resting).
I have also seen one or two tutor books that start at the other end with the pupil plucking with thumb on strings 6, 5, and 4 (fingers resting).
There are good arguments in favour of either of the above approaches. Personally I have come to favour starting with the thumb, as Continue reading