HI! I ALSO PLAY PIANO,VIOLIN AND GUITAR! YES,YOU CAN USE PIANO NOTES FOR GUITAR,SPECCIALLY IF YOU ARE A BEGGINER,CAUSE THEN YOU PLAY JUST ONE MELODY AND IT IS FINE.
BUT,IF YOU WANT MORE THERE IS ONE GREAT SITE www.free-guitar-notes.com AND IT IS FOR CLASSICAL GUITAR,BUT THAT IS VERY HARD,AND IT IS FOR GUITARISTS WITH MORE EXPERIENCES,BUT YOU TRY THAT IF YOU WANT. ALSO,YOU HAVE ONE SITE OF THE GOOGLE-SHEETMUSICPLUS.COM,JUST WRITE THAT IN GOOGLE.
THAT SITE IS FOR BEGGINER,AND IT WILL BE GREAT FOR YOU. JUST TRY THAT,THERE IS ONE BEAUTIFUL SONG,CALLED "ROMANCE",FROM ANONYM AUTHOR. I HOPE I HELPED AT LEAST A LITTLE!!! I AM ALSO TRYING TO FIND SOME NOTES FOR GUITAR,BUT SOMETHING LITTLE HARDER...ENJOY IN YOUR PLAYING! CLASSICAL GUITAR IS AWSOME!!!!
YOSEPHA