Get the Tone
The three exercises that open each section should be practiced with a clean tone, as a less forgiving one will make it easier to identify any technical weaknesses. Peter favoured the neck and middle (out-of-phase) position when soloing, so those are predominantly the sounds featured here (although neck and/or both pickups is also fine). Whether you’re using amp overdrive, a pedal, or modelling software, it’s important to keep your drive settings low. Green used distortion but it was achieved by playing an amp loud, not with preamp distortion; this will stifle picking subtleties and your guitars’ character and timbre.