ok I have sined, I ahvent been playing guitar as much as I should, but i've decided to dedicate myself to Metallica "One" solo and learn it untill i can play it with my thumb, but i've noticed like after 10 minutes the ends of my fungers get a little sore and make me uncofrtable to play, why is that, im only 15, but anywho, I need some tips for learning that solo, if you people know what im talking about, I can paly the tapping part really good, its jsut everything after that is hell, what are some tips you got for me?