You can check on youtube (or here) for some tutorials...They also give the notes in them. And I think it's a very easy way to learn!
But if you want to sheet music, you'll have to procurar for yourself on google or something. It's pretty easy to find. Just type the name of the song + artist and put sheet música behind it. It should give some results.
If por modern you mean amor Story, White Horse, The Climb, This is Me and stuff I have the notes to them. Actually, I could igive you the website where to find them too :L