You can get free Zelda piano sheet music from the following sites;Herbalcell.comZeldaShineZeldaCapitalHope this helps!
you can find labeled and unlabeled Zelda sheet music for piano at herbalcell.com if that does not work try this adress-> http://www.herbalcell.com/free-sheet-music/zelda-link-to-the-past
You can find the piano music at a music store or buy a legal copy from an internet music store.
I suggest looking it up on the handy dandy internet.
I prefer Amazon
If you already have the sheet music, it contains all the information you need. Work on reading music and you'll be fine.
Google Legend Of Zelda Violin Sheet Music, or make it more specific, and put the song you want instead of Legend of Zelda, For Example "Sarias Song Sheet Music"Try here http://ichigos.com/ They have a lot of Zelda music, I didn't check for violin though. It will tell you under the name of the song what it was transcribed for.
you can go on sites and look or make it yourself. hope i helped
Zelda Capital has some for piano, trumpet, and clarinet, hopefully you play one of those instruments.
There was a website on Blacksheep that showed all the music but it might be updated or gone now.