We shall start with our right hand, with the thumb. The thumb: p - is the key for your right hand playing. After each stroke it has to reach it's resting zero point. Practice the opening pages slow!!
This means, playing on an open string No. . Your left hand fingers will not participate, as it has a zero number.

The "play" button will activate a midi file so that you will have an idea of how the music should be sound. Midi files don't sound as good as your guitar! Midi sounds changed from one sound-card to another. Close the dialogue midi-box after listening.
P.S. The midi files will not perform repeats at the and of the exercise, to save your time.  

Move your p in ellipse route

Try to do as if you throw the p against the strings

Before and after each stroke, the p is at the zero resting point